Yes.

And it is part of the reason people are leaving Mesa rather than upgrade.

An FO can go to another airline as an FO, even another regional, and make double the money (or more) than they make at Mesa. In most instances they will make more as a first year FO than they will make as a Mesa Capt. So it doesn't make sense to sign the training contract.

Word is out that Mesa is enforcing the training contract. So, FO's are just leaving rather than upgrade.