League isn't a purely mechanical game. It never has been, and it never should be. Players who are not great at complex mechanics, but can read the map and apply their knowledge of macro play effectively, need champions they can play well. This is why point and click abilities, particularly strong ones on champions that have very simple kits, should still exist.
Let's use Garen as an example. Garen's kit is stupidly simple, and has very clearly defined strengths and weaknesses. He has no significant mechanics to his kit. His R, the point and click execute, can only be cast from close range (400 units), which works with the fact that he is easily kited. The basic counterplay to his design also works against this strong point and click ability. You don't dodge his execute with mechanical skill, you dodge it with knowledge of the matchup and by applying his counterplay correctly.
Honestly, issues like this where people want more mechanics and less knowledge are why so many skilled players are stuck in gold/low plat. It's not enough to be able to hit your buttons quickly and accurately, you have to learn about macro play.