Farming doesn't mean anything if your adc is a stuck up ass who refuses to work as a team in lane and harasses you and belittles you and expects you to cater to their every whim while they call the shots
The people that usually do this are the ones that think they can 1v3 the 2 enemy botlaners and the jg, and then when they die they pin their stupid mistake on you because 'ur the supprt ur supposed 2 save meh u fukn noob fukn grbage supprt'
I don't usually have a problem bot, I help my adc, keep the alive and get them kills and I get the occasional 'nice' or 'gj', I'm happy knowing that I helped. Botlane is supposed to be a team lane, you and your partner have to work together.
It's REALLY annoying when you have the one adc who thinks they are God and that you will be able to heal them no matter what. Like I remember I had a Vayne who i JUST SAVED from a gank, go back into the 1v3 without warning and then after dying started flaming me saying it was my fault they died and I should've kept them healed. Like no way, if you want to be an idiot then I will not be able to save you, I'm not going to risk dying myself if I know you're dead either way.
But overall I don't generally have problems, so idk where this "supports are slaves" thing comes from, been supporting since I joined the game 2 years ago and it's only the occasional douche adc or "im gonna go straight ap support because i didnt want support" person that are problems botlane.