The fact that they get to make this announcement is probably the biggest upside. Their base loves it. It makes people think they are doing something. There is an asymmetry in that if they quietly roll this back or it's blocked in court, it will generate only a tiny fraction of the publicity.
Probably not too controversial here to say that the economy wants these immigrants so good bet they'll keep getting hired.
It's a cruel strategy, but I think it's fair to say that it's far from certain it'll be a consistent one.
Don't let them troll you too much, stay strong.