It's possible that the Evan Peters thing is just a metajoke and he's just one of the residents of Westview that she appropriated into being Quicksilver but I feel like it's possible that they're gonna do something more with it since they surely know what the fan expectation is at this point
I've never seen the X-Men movies so this reveal was slightly lost on me but it's really good lol. I actually got spoiled on it because before I saw the episode I saw "Pietro" trending on twitter and that told me all I needed to know