Skating Twitter, which makes up a huge amount of fandom in the sport these days, already hated Vanessa James because of her reaction to the Cipres case, and they hated Eric Radford for a long time because of other things from his own past. Meagan (and Kristen, which AFAIK all she ever said this entire time was that she wasn't skating to Eric's music) didn't have to do much of anything for this team to be disliked. FSU was more split on Radford's method of stopping the partnership with Duhamel, but there are definitely plenty of people here who held James in very low regard prior to the two even dreaming of pairing up.
I'm not really sure what an interaction directed at Walsh (which included more than what is quoted in the article and was witnessed by skaters that have zero pull in the race for defending either side) has to do with either Meagan or Kristen, the former of which wasn't even there in the arena.