You are twisting my words again.
Of course all black people don't think alike. To think that they do is racist in itself - what do you think they are? Robots?
Some black people will say that it is racist to prevent transwomen or other male-bodied people to race against women, but others won't. Some will say that the earth is flat and others won't. I can quote my friend Carole and her 15 year old daughter, who are both black, and who both think your posts are risible, but what would be the point? You wouldn't believe it, which is, I suppose, fair enough, but even if you did, it would simply be their view - even as people of colour they don't assume that they can speak for all people with black, brown or any other skin colour. They are insulted to hear that you feel that skin colour matters to you so much that you believe that they could.
Do I really need to remind you that 'black people' encompasses professors in Brixton, nomads in Sudan, South African politicians and township-dwellers, Americans from Missouri and many, many more disparate groups, who have more differences than similarities, in lifestyle, religion, politics and access to resources. The idea that because some of those people have said something does not mean that they would all agree.