I still fail to see how any of that affects you as developer!?

Epic has had a quite consistent course of action. Empower developers. They have been excellent partners for decades, the Apple lawsuit is meant to take away power from Apple and give developers more freedom and independence from the sometimes erratic choices of Apple that have seriously harmed developers.

And exclusivity is them literally just offering you a huge amount of money if you publish your game on their store first. Which is extremely helpful, especially to small developers.

Therefore, I can not see anything questionable in these three points from a developer perspective nor do I see any real change in behavior.