That's been true for decades, sure, but I think you're underestimating how much things have improved and balanced out in recent years, with more TV actually being written by and for LGBTQ people, rather than using lesbianism as pandering to hetero male gaze.
Honestly, though the thought of what you're saying did occur to me, I felt Bebop did a good job of portraying Faye's romance simply as her first romance, with the gender of her partner being a complete non-issue. I think we're increasingly seeing that in the media, just treating romance equally matter-of-factly no matter what genders the participants are. I remember a college friend once telling me (after she indicated that she was attracted to the same female friend that I was) that she didn't think it made sense to rule out a relationship with someone just because of their gender. I think fiction today is increasingly written with a similar philosophy -- that there aren't distinct categories of straight relationships and gay relationships, but just a single category of relationships between people.