If a “Subway Preacher” were the most inappropriate activity to occur at a sporting event, there wouldn’t be nearly as strong of a case against it.
I too took the NYC Subway twice daily, in packed cars. And while they popped in every now and then, I rarely encountered them more than once every couple of weeks. And most of them were loud beggars for something like the “United Homeless Organization”, very infrequently preachers.