Bard only sucks since people suck at him.
Riot should honestly stop buffing him after this. He's really difficult to play so his winrate will never really be high, but his kit is really broken in general. He'll probably surface as OP in a little while anyways. It's probably gonna be like Lee/Yasuo where they sucked on release and then people figured out wtf they're doing and they get nerfed into a state worse than their release.