I agree but if the best ever solve recorded at a competition was with a certain type of cube, a lot of people would consider switching and I don't think that that would be blindly switching because the wr is good basis for a switch. People would switch in the same way as when many the majority switched to yau for 4x4 when Sebastian Weyer broke the WR avg with yau for the first time. (30.81).Every 4x4 wr after that was done with yau where before the majority used redux. The wr undoubtedly had a massive effect on the way people solved the cube.
You don't like stickerless cubes.
If they were allowed, you'd feel obligated to get something you don't like instead of sticking with what you do like.
You feel this obligation because you feel the advantage isn't necessarily negligible.
Remember what cube the 7.08 WR was set with more than six years ago. Now think of the difference between 7.08 seconds and 5.55 seconds. Now consider the advancements in cube hardware over that time.
I'm not one to say "it's the cuber, not the cube", but a lot of it is the cuber and how well the cuber's style matches the capabilities of the cubes the cuber picks.
Use what best suits your style, case closed.