The reason we focus on the OEM more than the pilots is that Boeing getting its act together (or being regulated to do so) is more scalable than every pilot in the world becoming more skilled. Individually blaming pilots isn't effective, regardless of whether you're morally for or against it.

Nope, we are focusing on Boeing because their product turned out not to be functioning as advertised.

There are many peculiarities in all machines, including the planes and we often handle that by trainings and warnings. There's no laws dictating that machines should be operable by dummies, especially in professional settings.