> For me - a better alternative is to only seek and store knowledge about things you are currently working on, and organise it by project.

That's the PARA method in a nutshell

https://fortelabs.co/blog/para/

I use this, very helpful, the prioritization piece is by far the most important, if you don't need it now but think you might later, just throw a note with a link in the archive with a couple of tags.