You have it backwards here. Apple needs to support developers. They make it expensive and inconvenient to develop on their ecosystem. But until Apple releases their stranglehold, I would be just fine if I never have to use their shitty OS, development software, and tools ever again.
my M1 Max MacBook Pro could run Baldur's Gate 3 at max graphics with no performance issues. On battery. Over extended periods
I'm a bit skeptical on this claim, or maybe we have different ideas of what "extended periods" mean. My M1 Max MBP would have just under two hours of run time with VS Code doing .NET Core dev. It was even worse when doing Ruby on Rails work. And that was when MBP was new. My whole team were issued these, and our experiences were the same. Zoom calls were even worse, with about 90 minutes of run time.
The ARM architecture has amazing battery life when idling, quite unlike x86. But when it gets spooled up, it eats angry pixies just the same as x86. All of my x86 laptops can do .NET Core work.. for two hours.