It is ridiculous! I'm sure it'll do little good but I sent some feedback at https://www.youtube.com/tv/feedback
restarossa
But I don't want to reward people that do this by watching their videos
I use them on both. I use more of them (6) on my desktop, and I use them more often, but only because I'm usually doing several tasks on my desktop while my laptop is for more casual use and I only require two or three. I mostly use Gnome and bind Win Key+Num for each workspace.
Funny, I love the colour though! Kirk Hammett played one similar in the I Disappear video, but opinions vary on how cool he is.
I'd think it should be opt in, but they're not even willing to entertain the idea of having neither selected and have the user choose on the basis they'd typically select to opt out. Perhaps that means you're in the wrong.
Haven't ever needed them on Arch. Probably never will.
fail