Where did this whole "adcs are whiny brats come from."

It came from ADC's being whiny brats.

Just like the "Yasuo and Riven players are toxic" meme came from Yasuo and Riven players being toxic scumbags.

Kinda the same reason for spotting.

it possibly came from people hitting fill for a quick with 0 intent to play support if they got it. so then they pick an APC in the support spot and build APC not support. no sightstone or wards whatsoever. they think being a gold starved apc is a good thing to be. or even better they just takes kills or cs. sometimes they say sorry and try to be polite about it.... when we know they are not. better yet take both and dont care. all things said and done this adc vs support war that has been happening all season escalated when auto fill came into play. yes adcs will whine and complain when they dont get a real support and the other teams adc dose. thats my take on it for the most part. my last point was if the guy in bot lane carry spot tries to break the meta in any way the team rips them apart. but if the support says i wanna go support most of the time the team dose not care. then tries to say stop being a baby and play with him "give him a chance" all im gonna say ADC bronzies please come forward and back me up on these points. as i know im no the only one who has these issues.

no idea tbh. supports trying to act innocent.

shit reminds me of the media portraying muslims as bad people or blacks as ghetto hoodrats

it comes from supports

because most people who play this game become whiny little brats not just adcs

Depends if your playing Normal or Ranked. Ahead or behind in games too.

You being lucky doesnt discredit others experiences. even if its only 30% of the time thats alot something doesnt need to be in majority to be considered alot. if you have 20% of your body cancer ridden you dont ignore it because its not over 50%

it comes from really shitty bronze support players.

A long time ago it used to be a lot worse, but it's definitely gotten better. I think some community policing and people no longer viewing the support as a ward bot have probably helped.