What you're missing is that the MPL does not mean multi-engine license.

It means multi-pilot license...

It is essentially accelerated training in the sense that it trains new pilots from the ground up only in those skills necessary to operate as part of a two-pilot crew. I don't have much exposure to the entirety of the concept, but I am under the impression that the most basic training is abbreviated enough that a MPL pilot graduate is incompetent and legally unable to fly as a rated solo pilot without further training.

It's feared to be one more step toward making the airline pilot profession into true brain-dead bus driving. I believe the consensus around the hangar is that such training programs will produce a pilot who is drastically inferior in skills, experience, and overall safety.

At the very least it will provide corporate management greater justification to slash incentives...to be honest, having gone through the run-of-the mill GA/college training, I couldn't respect that riff raff.