The steam group is now over 250k people large. Of course we can argue how large it would be if there was no outrage from them, but that is speculation.

But the group now exists. What do you think the higher ups who care about profit only see that 250k people will most likely not buy your game when you consult with SBI. And those are the people who bothered enough to join said group. How large is the real number who will not buy your game?
Suddenly it starts to be "DEI doesn't sell you more games". And when that happens they lose their money as well as their influence.