https://en.wikipedia.org/wiki/Paradox_of_tolerance#Tolerance...
It makes perfect sense. If you create tools to ban certain types of speech, say intolerance of homophobia, what happens when a homophobe acquires those tools? Because any tool will be eventually misused and abused.
You don't need tools to kick nazis off your platform. And who cares what homophobes do on their platforms? Don't use them.