The "blame" of this thread seems to be directed at instructors not doing enough for safety
Not all, but sadly too many, I think.
I'm shotting myself in the foot bringing up these issues when in the end I want to become an instructor myself, never the less, rather an instructor preserving the industry than destroying it...
Quite the contrary!! The mere fact that you recognised an issue in your own training and remedied it shows that you are approaching this from the right perspective. You did not blunder on regardless with a substandard instructor and for that, I think you will do fine.