They do have the send tab to device feature. I send tabs to my son, who lives with his mom all the time.

As long as the devices are connected to the overall Mozilla account. Same between my phone Firefox and PC.

I don’t have too many tabs that I would group together, but I can see how nice of a feature that would be.

I’ve used Firefox from the beginning and never trusted Google and Chrome. It has gotten better, but at a slower route.