Most of your issues seem to have been with Disqus and not with comments on your page in general, though I agree it's probably not worth attempting these days. Blog posts can be linked on FB, Twitter, Reddit and other places and those pages can deal with spam and their monetization better on their own premises, while you are not confined to one particular flavour of filtering/censorship for user comments (as with one service like Disqus). OTOH I don't particularly like the idea of actually interacting with Twitter/FB users as a blogger.

Your blog is very useful and knowledgeable I have read it for many yrs, and I think if someone has to reach out to you for asking any question surely they will reach out on twitter than blog comments.