Many PPL FIs are low time hour builders with not much experience outside of teaching the basics to others.
I know a FI who has less hours than me...which is a bit scary being as I still consider myself very much a novice at this game. How can people become instructors with barely three hundred hours? You don't know your arse from your elbow with only three hundred hours. No disrespect to them by the way, they are the regs and they are making the most of them. Fill yer boots as they say.