Sure, being bisexual is a real thing. But being gay and being straight are also real things.
If it turns out that Emma Portner is bisexual and is as happy being married to Elliot as she was being married to Ellen, then I’m glad things will work out for the two of them (or at least have a better chance of working out for them). But I think it’s wrong to assume this is the case.
Portner married a woman. Despite what’s been claimed in this thread, that is more than zero evidence that Portner is a lesbian.
Page has always been identified as a woman. He now says he is trans, has a man’s name, and asks to be referred to with male pronouns. Despite what’s been claimed in this thread, that is more than zero evidence that Page now identifies as a man.
Finally despite what’s been claimed in this thread, there is more than zero evidence that a marriage between somebody who is openly a lesbian and somebody who is openly a man is a marriage that is going to have some strain on it.
I’m not saying I know everything. But there is more than zero evidence I know more than some people in this thread do.