Mmmm, but cherrypicking behaviour to create a stereotype invites the reverse construction; that if someone does one of these things, they do all of these things.
Medium, if you look at it without blinkers, isn't about writing well. It's about making money. Or having fun.
I'm not seeing professional-level critiques happening all over the place about the quality of writing, but I do see lots of advice on how to make the most of the platform.
For example, correct attribution of images. That has nothing to do with good writing, but lots to do about being eligible for curation which in turn has an effect on readers and hence income.
Likewise declaring affiliate links. Did Hemingway bother about these sorts of things?
If you rant about people using Medium in they way you think it should be used, rather than they way it is actually constructed, then what does that say about your own attitudes and their validity.
At the very least, this is attachment; the notion that the world should be a certain way, and if it is not, then you should fill your being with stress.
What sort of way to live is that? Why not choose happiness and be a good example to others?
You ever see the Dalai Lama getting upset and having a good old rant? No, he smiles and laughs and gives tips for improvement and everybody loves him.
Having said all that, Medium is a great place to learn better writing, simply because there are any number of indicators pointing to what other readers have enjoyed and rewarded.
If that is what you are after.
If you are after something else, then you find that the easiest way to make money on the platform is to tell other users how to make money on the platform, and give it a good headline and lead image.