AutoFill is unhealthy for ranked gameplay

So ik what the first argument is: Learn all/most roles. That worked back in S4/5 when you constantly played multiple roles but here is why it's an issue with the current system. When your 99% guranteed a single role and then get autofilled. Your playing against someone who is playing their 99% role. What does this mean? When your autofilled your playing a role youve likely not played more than 10 games that season against someone who has played hundreds of norm/ranked games in that season in that role. No matter how much you know in a role, your not going to have the knowledge or mechanics of someone with hundreds of games on you INSTANTLY putting your team at a disadvantage. I would rather a 40m queue than a 40m loss because they have a 300 game advantage on me.