https://www.youtube.com/watch?v=sLMPFJQTmZs
Colgan Air Crash in Buffalo.
It is not direct link to P2F, but indirectly it does. Since they had no opportunity to stay in proper homes close to their base, they slept in crew rest.
Same with P2F boys and girls. Or you also put that amount you need for food and home together with that what you for that program, but then still you will try to keep that Living expenses part as low as possible. Which means, no money for proper food and place to sleep, so your real rest quality is very low, which later has effect on your performance in the cockpit.
See that crash of Colgan, to see what happens when you are fatigued.
And we are talking about that nothing is linked to quality of training of P2F boys. Well search for incidents and accident in Lion Air in Indonesia. Most pilots who participated there had to log non existing trainings in their logbooks. Lot of fraud was known there. The fact that so many Junior FO's there got involved in such incidents is shocking.
So I think there is a huge safety issue linked to P2F. Yes it is in Asia and not in Europe, but it s all fact that there are programs , which nearly led to DISASTER.