Yeah, and consider Martell is not doing so hot at Miami so he may not even win that job. That's the reality for some of these guys. They lose out on the starting job at school X, but are young and inexperienced anyway, so heading to school Y is no guarantee of winning that job either.
In some regards, they may be making the path to playing tougher on themselves. We don't know what the future holds for Baldwin, but here may have been just as good or better than anywhere else. He's already in the system for a year, Fields has looked a little shaky, and even if he picks it up is still an injury away from being the guy.
But, transfer somewhere unknown and have to start over. If it is a top 25 caliber P5 school, there's probably already someone there on at least equal footing with you, and somebody coming in the next recruiting who is just as good as you. It just seems like a coin flip at best for this transfer spree to work out for these kids, but more power to them. It's their choice.