There are 2 features that prevent me to switch from Firefox to Brave browser. Firefox's fantastic PiP mode and containers.
On Firefox, PiP has 2 advantages over Brave. One is that beside Play/Pause button, Firefox video window has forward and backward buttons, as well as volume slider, while Brave only has Play/Pause button.
Another advantage of Firefox is that the video window, has a specific window class name. Which means I can set a window rule in Kwin settings to always place the window at the top right corner of my 2nd monitor, with a specific size. But this can’t be done with Brave either.
Also the fact that Firefox automatically displays PiP when I switch to a different tab is another feature that I’ve got very used to.
That’s why I can’t stop Firefox.