Sadly I found out yesterday:
Matrix is not a community-based software, it was born [00] in Amdocs [01], a multinational corporation founded in Israel.
https://hackea.org/notas/matrix.html
Many were claiming its impossible to get contributions merged as well.
I would be happy to find out this information is wrong or outdated.
I would love this news if it didn't move away from the GPL.
Mass move to MIT is just empowering enshittification by greedy companies.