The GPL protects the freedom of the users while MIT-licensed software can be easily rug-pulled or be co-opted by the big tech monopolists.
Using GitHub is unacceptable as it is banning many countries from using it. You are excluding devs around the world from contributing. Plus it is owned by Microsoft.
So we replaced a strong copyleft license and a solid decentralized workflow with a centralized repo that depends on the whims of Microsoft and the US government and that is somehow a good thing?