That's the problem with the whole argument, isn't it?
People ask "Are they canon?"
Yeah, they happen in the same world but the stories are (usually) small enough that their events have no way to affect the movies. Sometimes they're supplemental, sometimes they're completely independent.
The someone comes up and says "they're not canon because no one from them shows up in the movies!", despite the previous point.
The only one that really creates problems is AOS, which is why it gets most of the "not canon" shitposting, but it still works as the most supplemental, "if you want to know more" kind of material to the movies (less so in the final seasons).
Anyway, it's undeniable that the movie people and the show people had a lot of studio politics conflicts going on, terrible communication, and so on. But sometimes they still did things like changing a character in Black Panther to avoid clashing with Luke Cage (while also fucking up with the Staff of One in Runaways/Dr Strange).
Personally, I'll consider them canon, in that "over there, doing their own thing" way, until they're either officially and explicitly disavowed, or like in >>118302723
, a character from a show is completely overwritten by a character on a movie or D+ show. Which will likely happen.