Ranked is For Learning, Not For Ignorant Fun
If someone is willing to spend even 20 seconds of their life to tell you something to make you a better player in RANKED, and you tell them that you don't want to be coached or you are playing for fun, ranked is not for you. Playing ranked is about trying to improve your game, and everything for the win. If people can't get over their dumb pride and admit that their wrong they will never learn. Can Rito just make your normal elo visible or something so people can stop having an obsession for this number that ranked provides. I am sure you are having fun with your 1000 games in silver, but from a utilitarian prospective by you refusing to learn from your mistakes you are ruining the game for 80% of your team. Its not like I go into games saying GG NOOB or call anyone names, but if I give you a helpful hint to maybe avoid dying don't spit in my face and be a child about it.
Winning sometimes means admitting you are making mistakes and learning from those mistakes will allow you to become a better player. We all have our pride, but is defending your pride anonymously behind a computer screen to someone you may never see again in your life worth more than winning? If the answer is yes then please play normal matches until you realize that ranked has a different feel to it. When you are ready to embrace that different feel, bring a different mentality to the game.
Go out there and fail, fail hard, but remember how you failed every time and try to curve it from happening again. If someone takes time to try and help you it means they care about you becoming better (if they didn't care they would just mute you and tell the enemy team how terrible you are before surrendering), its purely selfish in intent because they want to win, but its okay for you to take advantage of their knowledge and become a better player. I am not asking everyone to be amazing at the game, I am asking everyone to act rationally towards their teammates good will in order to win a game; then never see each other again potentially.
TL;DR Ignoring mistakes means you never get any better, if you are not doing everything in your power to win stay out of ranked. Remember your decisions directly effect how 4 (potentially 9) people will feel about you, and the community as a whole.