As long as it's honestly communicated beforehand, and employees are not deceived about compensation and workload as they voluntary sign the contract, is it bad or immoral in any meaningful way?
I'd say no. But given the trend of people calling 20 hours a week "slavery", demanding debt forgiveness; and such. It seems like it's becoming a minority opinion to let consenting adults make their own informed decisions (and deal with the consequences of them)..
Oh, bullishit. Corporations will take every inch you give them, right up to the red line. Then that becomes "normal". And then you'll cheer them on for it, probably.