So you expect gay people to deny their feelings and impulses, whereas "straight" people are allowed to? What rational basis do you have to judge that one is acceptable, and one isn't? Why should acting on those impulses be ok if the other person is the opposite sex, but not when the other person is the same sex?
I think it's absurd to expect there to be the ability to separate those two, the impulses, and acting on them (with a consenting partner of course). And that goes doubly for expecting that of one group (gay people), when you don't expect it of another (straight people).
As far as Collins goes, the simple fact that we're having this discussion here shows that what he did is still necessary, and courageous. And it's relevant to sports because there are two aspects of sports that makes them compelling: 1) the sheer technical aspect: of performing, of coaching, of strategizing. And then there's the human element to watch, how it reflects society, and also leads society. Part of that is watching people overachieve, going beyond their limits. In that general realm, sports provides a backdrop for wider discussions going on in the society.
I have no idea what you're talking about in terms of Jackie Robinson. I didn't bring him up. Personally, he's one of the great American heroes. But talking about these things now doesn't in any way change or diminish what Robinson went through.