I understand and and can agree with how queuing as support and then jungling can be an issue and hurt a team but the argument that in order to fulfil the support role a support needs to stay bottom lane kind of contradicts the existence of bard...you know that support that leaves lane 24/7 to go jungling?
Bard support rarely takes jungle monsters, and even then rarely attacks them unless to take a raptor or two, or to help the jungler out. He also roams at opportune times, not 24/7. If the nunu stayed bot, and only went counterjungling when bard would normally roam, then there wouldn't be the massive upset by his teammates. But he didn't. He was the opposite of bard in that he rarely went bot and roamed constantly, vs Bards being bot most of the time, while roaming when_** the adc**_ could afford it.
He also didn't seem to ask if the team was ok with this, but rather told them he was going to do it and forced them to comply regardless of their wishes. When I play Bard and am not duo'ing with my sister, I ask them if they are ok with me roaming occasionally(somehow adc's want bard, but don't want him to leave. Ever. Tough luck, I scale with chimes and you told me to play him, if you wanted a baby sitter I could of played Janna/Soraka) it was to the point where I have "If I go Bard, will I be able to roam without you yelling at me? Because too many people ask for him and yell at me for roaming, even if the enemy duo have backed or died." saved somewhere accessible to copy/paste into the chat.