It makes me terribly sad that we as a community failed so badly in making the Fedi an all inclusive space.
However, I wouldn't put too much blame on technology, when it comes to find the reasons why so many Black people didn't find this platform welcoming, or even outright hostile.
I reckon, people make the difference.
This is truly sad, as I believe that a self organised network is intrinsically a better choice than corporate ones, even if the latter seem friendly.