I don't think people in the LGBT community are pressuring any individuals to come out. In the main, they are offering support for them to do so if they want to and are ready to. The main source of pressure on a young footballer to come out is through the fact that if they don't do it on their own terms, they'll be outed by the press or gossip mongers the second they dare to go out with a partner in public or are spotted in gay venue.
Obviously it represents progress and hope for gay people to see that it's possible to be gay and accepted across all walks of life and professions. It's wrong to suggest that "the community" is trying to force people out though.