The experience requirement you listed is for A320 applicants. The TT requirement for the ATR is lower, around 500 hours (I think) for first officers.
But yes, they are strict with the Philippine passport requirement. Applicants are required to submit photocopies before the initial screening interview. They do accept applicants with dual citizenship however.
It seems the flight deck crew are generally happy with the airline. Unfortunately, the passengers are not. 5J has been plagued lately with a spotty on-time performance record and a reputation for mediocre customer service.
It doesn't seem to be improving, nor does the top brass seem to be doing anything about it. In this regard, chairman LG is like a deer caught in the headlights.