This. I've never run into problems on Firefox with even the most sketchy seeming domains.

Even ChatGPT and every anime piracy site I've visited runs fine. What's sketchier than those? lol

Limiting resources sounds cool. I wish I could at least determine why Firefox sometimes goes out of control eating everything. Setting a resource limit per page would be good too. Sometimes my whole computer is ground to a halt, but closing a single tab fixes it. Often not a page that is obviously doing much. Certain ecommerce sites are frequent culprits. Doing something in the background.

Firefox can tile two pages now: https://blog.mozilla.org/en/firefox/split-view/

+1 for Vivaldi. I keep expecting to hear that I've became out of the loop and it's turned into Brave without my knowing. It's a great concern. But so far, so excellent!

I use Zen as my primary browser. Vivaldi is my chromium backup for when something isn't playing nice with Firefox, and for installing PWAs. Vivaldi is great. I used it for years before Zen came along.

This is your push, DO IT!

Librewolf and Waterfox have been running just fine for me