I'd argue that vtuber fans are even more aggressive and rabid than K-Pop fans
4chan's vtuber board is infamous for being an autistic shithole filled with some of the most rabid vtuber fans ever and that is scratching the surface. Vtubers are a new phenomena that often attract some of the most desperate simps out there (or White Knights if you want to be old school). So if Jersh and KF become dumb enough like say go after some really big fish (like Gawr Gura from Hololive) then they'd be fucked from both the wrath of their fans and possibly from some Japanese talent corporation if the vtuber in question is corporate owned by a big talent agency (those Japanese talent agencies don't fuck around and are often merciless when it comes to their opponents in legal battles, just look at how Nintendo treats video game emulation).
It also shows me that communities like Kiwi Farms are pussies because they will never go after any big fish, any vtubers from those big talent agencies like Hololive are far too much of a risk for Kiwi Farms (or any other similar community for that matter) to go after because vtubers backed by a big corporation are not worth it (especially if they are backed by some Japanese talent agency that has the same mindset as Nintendo in their legal department). Kiwi Farms can go after people like Rev or Pippa because they are either not corporate backed or are a part of a small time talent agency that can't really do much but if they go after someone from Hololive then Kiwi Farms would be royally fucked.