//There are recent stats that show around 12% of the population is gay in one way or another.//
Yes but you cant then just apply it to any particular part of society.
Many jobs attract a certain type of person (not just talking about gay) and that in itself may deter some from going that route. Football probably is one of those jobs where due to a general lack of brains and education homophobia is probably more rife. It would follow on that gay people may well be deterred from following this job path.
I would however be surprised if he was 'the only one'.