The 1500 hour rule benefits everyone, including the airlines, their shareholders, and the insurance underwriters. Those disparaging it are looking to make a quick buck or cut corners at the ultimate expense - human lives. The US has the safest aviation system in the world for a reason.

No one wants a back surgeon straight out of medical school. Once they completed 5+ years of successful residency then they may be ready handle the work themselves. That level of competency should be expected of airline pilots as well. There's more than one's back at stake in this profession.