WordPress powers something like half of the websites in the world. No reason to trash talk it every time it comes up. It’s better than many alternatives.
But, you’re right that we have answered this question before. We won’t be doing anything with Litespeed without funding for the development (as I don’t think it’s necessary or particularly useful for most of our users, but if someone is convinced enough to put money behind the request, I can be convinced). That will continue to be true forever, no need to ask every six months. We support the two most popular Open Source web servers. We are a tiny team with a tiny budget.
I don’t know anything about configuring Litespeed, but I guess if it works with Apache configuration files you could tweak the Webmin configuration to work with a different service). I’d be surprised if it works with all the features of Apache. But, let us know how it goes.