I definitely feel like there's a lot of cheating that happens. Although as a solo-queue player even premades feel like playing against cheaters. But I have seen other players on my team claiming the other team was using some scripts or something.

Maybe the recent heat on the mod scene followed by SE doing nothing about cheaters has emboldened people to cheat more. Like they convinced themselves that "it's fine as long as you don't talk about it" applies to anything and everything.