I don't know. I don't watch any Spanish-speaking
vtubers so I can't really say for sure.
What I can *infer* from the Spanish-speaking streamer side, as
streamers and vtubers tend to reflect each other in similar ways,
Spanish streamers are loud and aggressive.
Yes, this is a generalization since loud Spanish streamers
tend to get more view time. But its more of a cultural thing, as
Spanish speaking streamers have a more upfront and sociable persona.
The viewers are also very volatile and immature which leads to the overall
community being exactly like that.
Major example of Spanish streamers and their viewers being quite hostile:
https://rp.reddit.com/r/LivestreamFail/comments/u53816/mendo_calls_out_the_spanish_streamers_after_rust/I'm sorry if this upsets you in any way.
But the fact of the matter is, if there were more Spanish speaking vtubers,
there is an extremely high chance they will cause misgivings.
Imagine if your oshi was trying to set up a Dragonball FighterZ
tournament and a entire generation of the Spanish branch just ditched it without warning.
You'd be quite upset