I finally understand why solo queue whines about Bard.
The 'support feeding when you're behind because support keeps attempting to ward the jungle' problem is exacerbated when he has to collect chimes.
Further, most Bard players use the ult to save themselves from ganks when that happens, which they should never, ever do.
Then most Bard players don't understand the cues when to use the ult so it will land for sure (after Eve/Malphite/Galio ults, or after the enemy Kennen + Amumu initiation, etc.)
Then they will whine about people being out of position after demonstrating they don't have any clue how to use the character to begin with.
tl;dr Bards are bad because when you fall behind the character is too hard for your average player's reflexes and brainpower to figure out how to turn a fight around. When you're ahead they are useless.
I always wondered why people complained about them, now I get it, they can and usually do single-handedly throw games they should otherwise have won by using their ultimate correctly. This is why supports usually get designed for brain damaged people to play, like Sona, easy to learn but the mastery only results in minor advantages.