Sure, it's not guaranteed to be a net positive for consumers but it's correlated.

Admittedly not exactly the same, but the Sega Saturn had trouble attracting developers because it was really difficult to develop on, despite the hardware being pretty good. As a result, people who bought a Saturn ended up getting fewer and worse versions of games.

I agree that they shouldn't necessarily always always do everything to appeal to developers, there's a balance, and I'm not suggesting that we get rid of community guidelines and the like, I'm just saying that the more difficult it is for a developer (or anyone) to do something, the less likely they are to do a good job at it, if they do it at at all. Worse apps means a worse experience.

I think it should be rephrased in this way: what is good for the ecosystem is good for the end-users.