Honestly its only been a real issue recently with whatever changes they made to it or autopathing. They changed it, made the issue 10,000x worse, then reverted it supposedly, but i still consistently miss CS due to my champion running in circles and not getting in range in time. And its not because i fucked up; i know my speed and my damage, and while i dont always CS the best, im not terrible at CSing. But its absolutely infuriating when you miss 1 CS due to pathing, because that 1 CS turns into 2 turns into 3 because your planned timing is entirely off due to you getting caught up on minions once.
Thats not even getting into missing a champion kill or dying PURELY because minions and pathing screws you. It was so bad one time i had only 3 minions around me, none would move, and i literally was unable to move anywhere. I had no mobility or range, so the enemy champ got a free kill on me when i should have been able to do something.
Creep blocking is fine with how it forces you to react to enemy champions; its not fine when you do plan to do something properly and the minions just straight up cock block you out of nowhere, halting your gameplay entirely.