They had their 15th birthday late last year: https://www.slow-journalism.com/delayed-gratification-magazi...

If you feel interested in following them but it feels too high traffic or chaotic you can follow specific categories with rss by just going to subcategories on the website and adding /feed to the end of the url. Even slower journalism!

For example I follow the long reads one: https://www.slow-journalism.com/filter/long-reads/feed

You can do that trick with a lot of sites. One of your old faves started pumping out listicles but still puts out good stuff here and there? Might be worth seeing if those higher quality articles have their own categories with feeds.