Not the person you asked, but for sites that don’t provide an RSS feed that fits what I want, I make a short scraper that builds the feed and subscribe to that.

I don’t do it often, but I’ve got enough practice (and relevant code) that when I want to, it takes only a few minutes.

Not a practical solution for most people, but it works well for me.

Open in browser with reader mode on. Only text. Lot of rss readers have that option