"I believe most of them are loosely based on true experiences."
This is how I see it. I was interviewed a few times over the years, and two of my sons too. Maybe 10% of what is said is pure truth, the rest 'adapted'. The talk outlines specify what 'experience' to find, so then they go look for someone that can relate something faintly similar, then adjust it by 'highlighting' an aspect of the tale.
My sons were made to look like little angels who were destined to be perfect elders and pioneers. They were nothing of the sort.
I remember how experiences more often than not depressed people rather than encouraged them.
One experience was a family man with 3 or 4 teenage children who managed to go part time working to just 2 days a week and pioneer. It was inferred if he can do it, everyone can!
However, what they left out was that he was a specialist tree surgeon and 2 days work/pay was as much as most people earned in a month. So, people got depressed they could not make the sacrifices he did, when in reality he had a perfectly comfortable life.