Yeah pretty sad. It would be a much more useful feature for me on mobile.

On desktop, I usually just create a new window for different types of stuff.

No easy way to organize my infinite tabs on mobile (as far as im aware).

Chromium browsers on mobile do this, but it's also a bit weirdly complicated/frustrating to work with at times, I hope of Firefox get to it, they can make it super simple.

The folks over on IOS are waiting very patiently for extension support. Firefox folks taking their time.