This is a ret-con. If you - as a user - were philosophically and inherently against the App Store, then it may seem that way, I guess?
The reality is that there was a long period of time where Apple built up lots of goodwill with a developer ecosystem that exceeded by many orders of magnitude the pre-iPhone OS X indie Mac developer scene.
There were many, many developers that hadn’t even touched a Mac before the iPhone came out, and were happy with Apple, and now are certainly not.
Another way to see it is that people who programmed for Mac OS already had reasons to be annoyed by Apple (e.g. 64bit Carbon). The iPhone let it get new people, who eventually found out why the pre-iPhone scene felt that way.
The reality is that there was a long period of time where Apple built up lots of goodwill with a developer ecosystem that exceeded by many orders of magnitude the pre-iPhone OS X indie Mac developer scene.
There were many, many developers that hadn’t even touched a Mac before the iPhone came out, and were happy with Apple, and now are certainly not.