As I have said here and elsewhere numerous times, I suppose if one is convinced that Apple is a big bully constantly out to fix the competition, then I suppose everything they do will seem that way, even when it isn’t.
As to the second issue, it has already been clarified earlier. An app developer tweeted what he believed was the issue (the sheer volume of stock iOS apps being deleted and re-downloaded led to the App Store search algorithm being skewed in its favour). When you think about it, it makes zero sense for Apple to favour its own apps when they come preinstalled on every iOS device, but confirmation bias can be a very powerful thing.
Likewise, Spotify isn’t available on the Apple TV, even though there shouldn’t be anything preventing them from putting it out. Makes you wonder just how much of what Spotify is complaining about isn’t so much that it can’t, but simply that it doesn’t want to, or just hasn’t gotten round to it yet.
I maintain that Apple is well within its right to compete with other apps in the App Store. This is really little different from a grocery store who decides where to stock each item, or to favour its own house brands by giving them preferential treatment.
If you think Apple doesn't use anticompetitive means to promote their own services you are truly in complete denial of the facts. Apple has frequently used push notifications to market Apple Music while banning third party services from doing so. That alone is giving their service an unfair advantage.
If you think the timing of things like this are a coincidence I don't know what to tell you..
The climate has changed for the major tech players, Apple is under investigation at home and abroad ,they know the game is up.