I post content. You view content. I moderate content. You no like, you no pay
Riseup is free because it is made by people who want the internet to be better. The same way tor is free.
But you should be donating if you find it useful. And I could nearly guarantee that a service that is used for censorship resistance that gets used for P2P will go from nice and fast to ungodly slow
Technically you should be donating if you get value out of it
Why not run your own scraper?
https://bitmagnet.io/ (probably the simplest)
https://github.com/seik/stilio
https://github.com/AlphaReign/scraper
https://github.com/alanshaw/libp2p-dht-scrape-aas
https://github.com/boramalper/magnetico & a cli search utility for it: https://sr.ht/~rakoo/magneticos/