It's not about luck, but it's defently about knowing how to use your strength, finding the right spot to push sometimes does more than being stronger. Are you sure you'll always find the right spot and someone weaker never will?
So, I can agree that some strength checks should be avaible not only to Barbarians. And I can't agree that there should be no dice-rolls.
I didn't suggest removing the dice roll though.
I'm suggesting not allowing weak characters to perform feats that require raw muscle. BG3 gives them other ways to solve the problem anyway.