Their headlines in my aggregator are advertisement.
Re:It’s Time to Get Back to RSS
by reanimated on Sunday May 24, 2020 @10:35AM
(#23291798)
Well, there are still affiliate links, you can still promote your own products like courses or books and invite readers to subscribe to paid newsletter. Most of my subscribed authors have Patreon now and it generates much more than ads would.
Unless a blog really has ~50,000+ daily uniques, or a lucractive audience niche, I suspect there’s not much opportunity to monetize even if they wanted to.