I know from what I have read that Webflow can be used fine with the Lite plan for $16 a month, using it to design and export static HTML sites that can be easily hosted on Netlify. I guess what I'm asking is if I had over 100 mini sites, how hard is it to switch between projects to re-export small updates I might need to do to some of those sites every now and then? $16USD a month isn't a lot I know, but I've already got so many subscriptions already and I want to be sure Webflow can do what I want before paying.

Mainly looking at static websites for the speed benefits, but also I think I like the idea of them not needing plugin updates all the time like Wordpress sites do, which is where all my sites are now.
You might wanna check with cryolayer's infinite websites plan

I've only used it once (and it worked fine)

But I think this would be what you might be looking for

Just give it a try with the free plan

httpscryolayer.com/