Sure, there's certainly interest in doing this. See this post for more details: https://misha.brukman.net/blog/2022/04/writing-math-with-hug... (I'm not the author of this post)

Client-side rendering works well enough for me, and has been for years (as a visitor). I don't see a benefit to integrate a custom Hugo patch to get server-side rendering for my simple personal blog.