Well yeah it is only certain injustices, I don't think it's realistic to expect football to protest every single injustice in the world, do you?
They have to be selective but as it goes they do try and highlight this one, including the rainbow laces campaign https://www.premierleague.com/RainbowLaces. Lots of work still to do of course.
One of your more subtle BLM shaped whatabouteries this but as with every single other time, it's a massive swing and a miss.