Yeah, I agree.. Doing enough prep to get a hundred percent acceptance rate is not worth it. And it is a level I couldn't achieve anyhow. I've done fine on my career with 50 percent or lower acceptance rate at interviews. It's one of the things I'm the worst at in this industry, but you only need to change jobs fairly infrequently.
I also question a lot of these "I landed every offer" claims. People often exaggerate their victories.