Riot is infamous for this even among players. A lot of their dev decisions in the past were blatantly "fastest possible answer", including things like building solid terrain out of immortal, un-targetable units to save time.

That said, the criticism feels sort of dated, like they got a bad reputation and it stuck after they caught up to the normal amount of badness for a video game. There are kludges, but they don't show the way they used to.