I think you're probably right, because the MCU is so heavily influenced by Marvel stories from the 2000s. The best we can hope for is that the MCU doesn't usually trash characters the way the comics do. See for example how "Civil War" in the comics turned Iron Man into a near-fascist, making many fans hate him for years, while the movie inspired by the event went to huge lengths to make sure they didn't do anything to make Tony unsympathetic.
Wanda isn't as important a character as Tony Stark, obviously, so there isn't a guarantee that they won't do wrong by her, but the comics have this way of just casually making characters horrible for the sake of an event, on the basis that angry fans buy more comics and the angrier they get, the better the event will sell. Wanda is hardly the only victim of this, since it happens practically every year; it's just that what happened to her had long-term consequences for two big comics franchises. But everyone has their own complaint about a favorite character who was written out of character for the sake of a big event.