Topics like this are fun to follow because they generate some real gems
I think that nobody in their right mind really wants her to be deleted from the game, a person who thinks like that shouldn't be considered in a debate. Based on this, I think there is a consensus that she needs adjustments. Either she, or the whole game. If any character has something that limits a large part of the general resources of several characters, this should be reviewed. Maybe the way is to improve the tools of other chars so that they deal with her mixups, I don't know, but something needs to be done. This "leap characters case" remind me a lot of the case of Akuma in Tekken. Demon Flip isn't a common thing, so it took time for the community to adapt to something different like deal with a jump move in a 3D game.
Arguments like "pro players who spend 10+ hours playing the game can handle this, so it's fair" help as much as pumping motor oil in place of own blood. Without saying the "practice more, then you can talk about" argument as if all the practice in the world was going to change the fact that there might be something wrong (this one in particular really made me laugh because the fact that I practice and have less difficulty dealing with her doesn't changes the fact that they need to do something). I understand that our community in particular has a serious problem with aversion to the Practice Mode and the use of this tool really really needs to be encouraged, but it wouldn't be more productive for everyone if some material was made to show
how to deal with it instead of just "git gud bruh, she's fine" since you are ok with having a special that leads to 5+ mixups?
Furthermore, instead of naming pros, why don't you show some of your matches for us so we can see how easy it is to deal with even if you don't are a pro? I believe it will be of great help. Especially because the only reason we don't have a "Leroys crisis" is because the players don't want to use her, not because she's ok.
(Anyway, forgiveness for any grammatical error, english isn't my native language)