My understanding is that they migrated most of their political stuff to lemmygrad.ml, and lemmy.ml is a mostly a general instance with some pro-china tendencies. I have zero concerns for developer political ideologies on open source licensed projects with good licenses as long as they stay professional.
Nothing is stopping you from defederating from lemmy.ml on your own instance and/or creating a fork and doing nothing but rebranding it with proper attribution if it really bothers you that much (or use an alternate tool like kbin), but you should realize almost every software you use had at least someone with political ideologies you would disagree with make contributions somewhere in the stack.