How much would it take up if there was less RAM available. A web browser with a bunch of tabs open but not active seems like the type of system that can increase RAM usage by caching, and decrease it by swapping (either logically at the application level, or letting the OS actually swap)

~10 projects in Cursor is 25GB on it's own.

I wonder if having less RAM would compel you to read, commit to long term memory, and then close those 80 tabs you have open.