I use Chromium on linux because Firefox doesn't have touch-screen support and smooth-scrolling feels a little rough. I wont hesitate to switch over if these changes are made though.
You can also disable smooth scrolling only for the touchpad in about:config to keep the animation for scrolling with the keyboard. Search for "smooth"; I think it's the mouseWheel one, but I'm not at home to verify.
Disclaimer: I contribute to Firefox and enjoy it quite a bit.
On Ubuntu and Kali (both debian-based), it most certainly does.