Considering the topic came up when we had a conversation about religion (I’m Jewish he’s Muslim) and I mentioned some of his comments I saw on social media about gays, he said “We don’t tolerate that s**t it’s a sin”, so yea, I’d venture to say it’s exclusively or mostly that.
Back to topic, I do see more black riders out now than before so a good sign but as someone mentioned above the US also lacks infrastructure for urban cycling to be a decent hobby. Most people who live inside of the city that I know cycle, do not recreationally cycle in the city