It's the same thing every year.
"BOO HOO, YOUTUBES LAYOUT CHANGED AND IT'S SO SHITTY, I JUST CAN'T HANDLE ANY CHANGE".
How dare google try to improve the interface of a service they provide absolutely free.
Anyways, I've been using the new layout for a while now and it's fine. The only complaint I ever have for any layout update is that it breaks most of my custom scripts, and I have to either wait for them to be updated or go and fix them myself.