let's break this down:
I can assure you that 99.99% of the people that dodge don't because they've been autofilled
this is an exaggeration so don't pull this
They dodge because they see a crybaby child that is unable to comprehent being autofilled
basically you hate autofill and would rather dodge than deal with a lane you can't deal with. thus contradicting your last statement.
and locks in an troll pick (after the person that got their lane nicely said 'No, sorry')
nothing is ever a troll pick and if a player says no to something you just have to accept it. you cannot force them to change their answer just to satisfy you and your needs.
I'm fed up having to dodge and dodge and wait countless minutes because i get a mentally challenged trash that can't think about other human beings,
dodging is your choice and yours alone. no "mentally trash" is forcing you to dodge. this sounds more like a you problem than a team problem.
then i think.. Why am i being punished because of this kids mental state? Just why? i don't understand honestly..
actions have consequences buddy. if you don't like the punishment then don't do the crime. you're oh so precious lp and mmr are not as important as you think it is.
bottom line is the only one with a problem is you. and the more you cry about it the worse it will get. if you want to actually play then suck it up and play the game. otherwise stop queuing up.