I don't agree with any of your post. Mitsi PHEV are renowned for slow charging. A Tesla owner has both a Model 3 and a Mitsi PHEV. In the time it takes to fully charge the PHEV's tiny battery, the Tesla charges with sufficient power to run 400kms not just 55kms of the PHEV. Hybrids are a mix of the bad parts of the ICE and BEV environments and don't provide much saving. I could drive from Newcastle to Brisbane at around a third to half of the cost of an ICE vehicle depending whether I use Tesla or ChargeFox charging facilities.
To address your points:
The Tesla charging infrastructure in the east coast of Australia is excellent. You can travel anywhere without fear of not getting a charge. With the supplied universal charger kit you can charge from any 10 amp or 15 amp socket anywhere in Australia. Buy an additional 3 phase adapter for this kit and you can charge at any caravan park or showground in the country. And most of those are FREE. There are also ChargeFox and Evie charging facilities as well as motoring association chargers in these states as well.
The Tesla Supercharger network is accessible from the navigation system in your Tesla and the system will tell you how many bays are available at your selected charger and if there are any out of service. The advantage of having a car that is connected to the internet via 4G means you won't arrive at the charger too find yourself stranded with no power. The car will also prepare your battery for the most efficient, read fastest, charging by preconditioning the battery as your navigation system knows its getting close to the charger. You can't do that in your PHEV. As I note above, the Tesla will charge faster with more battery range than your PHEV.
Tesla has Camp Mode to allow you to camp if you wish however what does an ICE, PHEV or BEV have/not have that prevents you from driving to a camping spot? The Mitsi PHEV doesn't have the outlet which allows you to use the high voltage battery as a power source (V2G or V2H) in much the same way as most BEV's so the battery power side of things is a moot point. To use the 12v outlet in your PHEV you need to run the engine once the battery runs down. The 12v (now 16v with the introduction of the new Lion low voltage battery for the 2022 model) in the Tesla is charged from the main high voltage battery so if you plan correctly for your trip and arrive at your camp site with a good charge then it has a longer run for the 12v system and you don't get the pollution of the petrol engine needed to run in the PHEV to keep the charge up to the battery.
If the grid is down you won't be able to pump fuel from any servo either as they run on electricity. Carrying multiple jerry cans of fuel inside you vehicle is not really a solution and it is a safety risk. And are you really going to drag a trailer arounds everywhere just to supply your fuel needs. This would increase fuel consumption and battery usage in any case.
In the case of most BEV (Tesla) owners I converse with they have, like me, their own solar power generation, many coupled with batteries, and this allows them to charge their vehicles for free from excess power that would normally be pushed back to the grid at no real benefit these days given the FIT situation in most states. And the providers want to charge you for sending to the grid now as well.
For the price of your PHEV you could buy the RWD model Tesla Model 3 after rebates from state governments and have a much richer environment to enjoy IMHO.
Suggestion: Download an app to your smartphone like PlugShare or A Better Route Planner (ABRP in most app stores) and do some trip modelling. They will show you how prevalent charging infrastructures is in this country. It will help you with your PHEV travels as well. ChargeFox and Evie also have a smartphone app for their charging networks but you'll need to register an account and get their RFID card to make the charging process seamless.
A point to note - most BEV owners, unlike your PHEV, don't charge to 100% every time they stop. With ABRP you plan your trip and the app gives the charge locations and the amount of charge required to get to your next location with power to spare. As an example - a trip from Newcastle to Brisbane in a Model 3 Long Range has two charge stops and each of these stops in less than 30 minutes whilst arriving at your destination with a good battery percentage on board. The amount of time you would take if you had a break for food or coffee. If you choose not to stop in your PHEV for breaks then obviously your fuel consumption will increase and the value of the PHEV is somewhat diminished.
I live in a rural location and am very satisfied that my BEV can have a full charge if required or a sufficient charge to get me to my nearest Supercharger location. Unfortunately, you list many of the misconceptions of BEV's that are easy to discount and in many cases are put forward by EV cynics or fostered by the ICE manufacturer community. Enjoy you PHEV. I'm sure it is the right vehicle for your lifestyle.