There's nothing that's on their (or others) sites that we couldn't all do without (even El Reg).
True.
We also don't need electricity either, people survived for a long time without that. And we can all go back to hunting and gathering as well, after all people survived doing that for millennia.
Tell you what, you go and live in that world, and I'll stay in this one where my life has sometimes been made much easier by the material YT et al provide.