Okay, I do not have enough knowledge about the current version of XFCE. I only know that the look of XFCE was super outdated if you do not tweak it. I cannot say if it is solved or not today.

Why do people recommend mint xfce over cinnamon? Is not the cinnamon version better for a newbie?

https://alternativeto.net/software/firefox/

I use Firefox mobile since they support extensions but I have to admit that mobile browsers that are based on Geckoview are worse than browsers that are based on Blink.

Mozilla said that they want to concentrate their power on the mobile version, but I could not find the statement anymore.