Regarding Curd, some finished his type rating courses and P2F scheme via BMI, joined EZY and then got chopped. Some finished the BMI line training, thinking they would get an interview via parc for EZY to find EZY changed their requirements. Not a good feeling if you have training debts and paid for all of this.
Regarding P2F, the CAA's should be stopping it from happening. If an airline needs a FO, they should pay them a salary and advertise the job. It stops experienced pilots from other operators being able to move positions, undermines the union, potentially introduces a negative culture and atmosphere within an operator etc.
A safety argument could perhaps be used if a person has a large amount of debt, increasing their stress and knowing they have to perform if gaining short term contracts at the end of their P2f scheme to be able to continue, clear their debts and not go bankrupt.