I will totally agree on one point: this scheme is just insane, and I would never suggest it to someone starting from zero. It is just not sustainable financially, nobody is disputing this.
Wizz could barely make sense if you join already as FO or better SFO, without having to finance the all course, and a fast command possibility.
And if you do not have to commute, or at least have an easy one.
In this case, with a net salary between 2000 and 2500, you can have an half decent life in let's say VNO or SOF.