Well, MCU Wanda is a telepath/telekinetic like Jean, instead of the probability manipulator from the comics. There may be some influence there on Joss Whedon's part. And we've been expressing disappointment here that Multiverse of Madness almost never used her witchcraft powers, never even mentioned Chaos Magic (because the story was planned out before the director even heard of WandaVision) and mostly just had her use telepathy and telekinesis, with a story that was kind of Dark Phoenix Lite, even having her kill Xavier like Jean did in X-Men: The Last Stand.
I guess what I'm saying is that MCU Wanda doesn't have to be like Jean Grey but unfortunately she's sometimes been similar to Jean at her worst, just like John Byrne gave her a Dark Phoenix knock-off story in the comics.
I hope Wanda gets to go back to being what makes her unique -- a witch and a robosexual -- and MCU Jean gets to do something that doesn't involve that darn bird.