Very interesting and very sad that we need these actions

My target websites are oddly specific: biotechnology news maybe it is only that particular case

Can you provide some resources to extract RSS feeds?

I'm not sure exactly what you're asking for. I run tt-rss on my own server. It gets the RSS feeds from sources I've configured, then performs categorization of the individual RSS entries into topics that I've defined, and provides RSS feeds of its own that aggregate those entries. I read the aggregated feeds my server generates.

Does this help?

tt-rss looks awesome, thanks for the rec!

It may be the push I need to start teaching myself how to set up and run a server and how to use Docker.

Very interesting, I learnt Rust for the same reason: having fun doing something that I need and learning new things in the process.

Good luck for your new project!