This is a big if, cause I do think she wouldn't jump ship, but assuming she did and continues being a Vtuber with a different avatar and all that, I'd def continue supporting her
I like the other Holo girls, and probably watch some still, but Haato got me into this rabbit hole to begin with proper
Whatever will make her happy, really
Worst case scenario for me would be either she's lifeless in Holo, or she quits entirely (albeit the latter I'd at least respect, even if it'd be incredibly sad)