This.

In most cases, no, but to have the first major gay character in a Disney film be played by a straight comedian (in a role that sounds like nothing more than a parody of gay stereotypes) is ridiculous

So really I think it's a matter of how the gay character is being portrayed: if it's a drama or a film in which the character is taken seriously, or at least approached with some degree of complexity (Moonlight, Carol, Brokeback Mountain, Another Gay Sequel: Gays Gone Wild! etc) then it doesn't matter who plays them as long as they act the role well. If it's a film in which the character exists only to take the piss out of gay people (like this Jack Whitehall film), leave it to the queers. We know how to make fun ourselves, we don't need the heteros to do our job for us.

I thought Jack Whitehall was a gay

I'd be more offended over the fact that the role sounds like it's painfully stereotypical and that they hired someone talentless to play it.

It's just outrage for the sake of outrage and saying that someone can't play a role unless they identify with a specific element of that role is just limiting the art form.

At the very least bi

If only heterosexuals played heterosexual parts there would be an outcry. Sounds to me like the LGBT community is trying to single themselves out, when what's needed is inclusion.