I have wondered that.
It does seem like I am playing a different game to a lot of people when I read threads.
I am quite lucky.
I don't cut myself at all. I don't get weepers.
I got a bit of razor burn when I first picked up a de, but I think some of that was the soaps (I have discovered that some soaps sting)
Any DE with anything that wasn't a feather was just pointless.
Just scraping away for ages.
So, moved up the efficiency route and things got better.
Definitely better with SEs then again, better with injectors.
I think you might be right with the rigidity thing.
I tried face mapping and it is an excellent idea.
BUT, feeling it and using cotton wool doesn't help in areas where it literally goes round in circles.
Photographing it REALLY was great. I also discovered some that just lie flat against the skin.
So, I think that the mild razors struggle to catch them. A more exposed blade gets at them more.
I also haven't found a blade yet that I would say was sharp.
I actually find it odd that people do. Compared to what people say about a blade, I would have thought that I had a duff pack.
But they can't ALL be duff.
I used a mild razor on my arm and it gives a BBS instantly.