Yeah. I can imagine it must be hell in Draft Pick/Ranked, but stuff like that still happens in Solo Queue.
There are times when even if I call a role first, (let's say top lane), there's some asshole that instalocks that role and says "nope, I'm good. trust me". Science has proven that when that happens, there's a 56.72% chance they will feed and/or become first blood.
Then when we lose and they have the gall to blame the team for their loss? It makes me wonder why Riot doesn't implement an IQ test when you make an account so idiots don't ruin my Solo Queue experience.