Just please ask someone with specific knowledge of these things before you embark on them. Check Wikipedia, it is very peer reviewed when it comes to science based information. Try out metafact as well. Remember just because something has someone with letters before their name (Dr) or qualifications under their belt, still check out the person, a vaguely connected qualification from 40 years ago doesn't hold a lot... Source: about 3 years ago

There are services that can do that. https://www.pipes.digital/ is mine and filtering feeds is probably its main use case. There is also https://siftrss.com/ and I know that some RSS reader have similar functionality, like https://blog.feedly.com/leo-and-mute-filters/. - Source: Hacker News / over 2 years ago

Yes, you can learn more about filtering out / mute filters here https://blog.feedly.com/leo-and-mute-filters/. - Source: Hacker News / about 3 years ago