The reality is that it's a lot of fuss for a game development company to switch engines but for an experienced individual developer it's not a huge deal to switch engines. If you learn game development and design today using Unity then 100% of the game design knowledge is exactly transferable and 80-99% of the game development knowledge (depending on exactly what you're doing) will transfer to Unreal or Godot or whatever else you might need to use later.

It's like a musician switching from one audio production suite to another. The musical theory stays the same and while the exact details of how to make each bit of software do stuff is different, the actual stuff you're making it do is broadly the same.

Knowing the sort of person JR is, I absolutely wouldn't be surprised. He's a shit human

I don't quite get how the changes are so bad for indies. You must have both $200k revenue and 200k installs before the fee starts ticking on the excess installs. Do indies really sell that kind of numbers?

I can see how the flood of ad-based mobile F2P games are hit, but I don't feel sorry for those that run that kind of model.