I think being more specific leads to greater understanding, not less. When is good enough, good enough, and when do we need to be more specific?
It can, but often it is overdone, which is why all the students of one school might do ikkyo
one way, and all the students of another school might do it another, with both schools thinking their own to be correct and the other to be wrong. In this sense, being specific leads to self-delusion - and it is very, very common.
Being more specific should work, of course, but in martial arts it can be confounded by the human inquisitive element. We want answers, so teachers give them, and students believe them. I prefer to figure things out for myself.