Hype is too strong and good ideas of the past are a niche topics. Computer science should focus more on its own history and realize what has been done and needs

Hype is too strong and good ideas of the past are a niche topics. Computer science should focus more on its own history and realize what has been done and needs to be taken further. I wish I studied much earlier about things like process calculi, PL/type system theory, alternative OS design and verification approaches. Just by chance I pick up important information from the web or in rare master's courses where we are just a handful of students (while the machine learning courses get hundreds).