Actually, I also use this method (keep-archive) in Google Keep for keeping other site too (the 'archive' button is so satisfying to use. It lifts the burden to manage bookmark out of your head, and I know the information is there, in my Google Keep, if I want to see it again (Note: I don't)
For sites I use frequently, I put it in new tab screen using chrome extension called Toby. If it start to accumulate, then I review it, discard it, or save it in specific label in Google keep.