WSJ is a rag.
The federal indentives to Stellantis and GM were production-based tax incentives. So, the money was allocated for the future, but nothing was actually paid out. What Joly is saying is that if they bail on production, they will see no money. That was the deal from day one.
There is a myth propagated in media, especially the National Compost, that the government throws away free money without requirements and milestones. My Boomer Conservative neighbours love this idea, but it lives in their head rent free.