Any training is better than none .How the user then goes on to use it and then can't be bothered to continue in the same vain is what makes a safe shooter or an unsafe one .
Btw we're you trained or did you just roll along monkey see monkey do.
Training, experience yes but that can come about in many ways and not just by a formal course.
I once knew a university lecture with lots of letter after his name, was teaching semiconductor material science but confessed he did not know how to wire a three pin mains plug. So qualification or training are not a substitute to practical experience.
What’s that old saying, those that can, do; those that can’t teach.