No one is doing this. People who wish something would fail, aren't a fan of it.
People can be fans of TOS and dislike the rest. Or they like DS9 and VOY, but can't bother with the other series. Or they only like the new movies and can't deal with the "old outdated stuff". Just to name a few examples. I guess they can be all called Trek fans, because they like at least one incarnation of the franchise, but the differences between them are obvious.
Trek fans are not a monolithic group who all love everything with the name Star Trek on it. They often don't like this or that and if they rather see something gone, they are not a fan of this specific series or movie. They are not wishing something they love would fail, they are actually wishing something they dislike or even hate will fail. I don't see what is weird about it.