The new shortcut key (ALT-SHIFT-Y) is terrible. I understand that the modifier combo needs to be alt and shift with the new web extensions, that's fine, but 'Y' on American keyboards this is really awkward to reach. If ALT-SHIFT-V could be the shortcut, it would be much better.
I understand that this is going to be a difficult adjustment, especially for long-time users. ALT+SHIFT+V is already in use (it invokes the View menu from the top menu bar). I also considered CTRL+SHIFT+V, but that is in use by Firefox as well (paste as plain text).