People seem to have different ideas of what makes an experienced horse person. I am often told by new students about their level of experience and it always seems to be assessed by the number of years they have been riding.
…. in the end, we are using our best guesses to help our horses. You should avoid anyone who tells you “I know” with unqualified certainty. They don’t.
I sometimes explain to students that the simple difference between me as their teacher and them as the student is that I have spent a few more thousand hours working a few more thousand horses and making a few more thousand mistakes.