On a slightly newer machine (3 years old, 32GB memory) Firefox (or rather LibreWolf) again runs nicely with a few hundred tabs.
It would probably run fine with that amount of tabs also if it had 16 or maybe 8 GB, but not together with 2 or 3 IDE instancee, Teams, Slack and ome or more applications running in debug.
I have absolutely zero issues on 10 year old hardware with 16GByte of memory. Hundreds of tabs (Firefox is really good about moving them out of memory when they don't get used for a while - which, lets be honest, are almost all of those tabs) and the normal everyday onslaught of office software, a fat IDE, and a CAD editor.
This stuff is not rocket science. It's not even performance gaming. We worked efficiently in 2013, and it still works today. All it takes is some memory and a halfway decent SSD.
It's usually at least slightly more usable as long as you don't have too many tabs open.
I'd also recommend Firefox in general but that's neither here or there.