Well, if you don't run uBlock Origin (or bare minimum another less efficient tracker blocker), no amount of RAM can really save you once you cross the threshold of 60+ tabs open.

If you want to save resources (and that what talking about 2GB machines is) you just don't keep 60+ tabs open. You cannot eat the cake and keep it at the same time. I cannot see how anyone can jump around between 60 tabs every day. If I have more than 10-20 tabs open after a working day I know that the day went in a very unorganized way and I have probably more open tasks than in the morning when I started. It happens because I have plenty of unused RAM on my work machine, but it's nothing I'd defend. Maybe a smaller machine would just force me to organize my work better.

Bookmarks are there for organizing stuff one will need at some time later. Keeping tabs open does not seem to serve any special purpose. Unless you want to save cycles to render it again, but I don't remember many pages I would like to use frequently that even a very old PC does not bring up in decent time. The local weather forecast loads rather slowly, but that I want to reload every time I visit it anyway.