I do this too, and I like it a lot:
https://www.jefftk.com/p/mastodon-replies-as-comments> Using Mastodon to power our comments means that every time someone visits the blog post, the user’s browser makes a request to your Mastodon instance. ... I’d proxy these requests through my server, but it’s yaks all the way down.
I do proxy these, and it's not too much work [1]. A major reason to proxy is so you can cache: if a blog post gets HN'd it could easily get more traffic than your Mastodon instance would like to receive.
[1] https://github.com/jeffkaufman/webscripts/blob/master/commen...