Are we saying lesbians are a recent invention?
In historical context, assuming the film that Andy saw that made him and his friends want the toy and happened to be made in the early 1990s, lesbian characters weren't normally featured unless they were stereotypes (or often used as eye candy).
Basic Instinct (1992) certainly got it's flack from the gay community of San Francisco because the film featured a villain who was bisexual, one character who was a lesbian who was also a killer and a third character who is a straight female character admits to have had a sexual relationship with the villain but admits she was ashamed of it because it was the only time she had been with a woman (in fact, that community felt the film was continuing on the same "being gay is evil" trope that had been in Hollywood films for a long time. In fact, the same groups were oppose to
Silence of the Lambs as well for the same reason). Seeing a normal lesbian relationship in a film in the early to mid 1990s, especially if the film was made in America, wasn't really common except maybe in an independent film that was made outside of the studio system. I'm sure Europe had quite a few films that had lesbians shown in a non-cliche/stereotypical and positive view, but it certainly wasn't common in the U.S. films circa early 1990s. The closest to such any lesbian representation on screen that could be construed as being seen in a positive light I can recall from that time is Ross' ex-wife from the
Friends TV series or Ellen DeGeneres' character in her own series. However, I could be wrong about my assessment of homosexuality and it's presentations in the 1990s, as my film tastes were mainly sci-fi, action and horror at that time. All I know is that Hollywood didn't seem to treat homosexual characters as normal people until the Jonathan Demme film
Philadelphia (1993).
Honestly, it'd make more sense to use
The Real Ghostbusters as an explanation for Andy and his friends wanting the toy. For those who may recall,
Ghostbusters was an R-Rated movie that wasn't meant for kids. However, after the success of the film, the studio did the animated series
The Real Ghostbusters, and they partnered with Kenner to do the toys modeled after the animated series since Kenner remember the whole fiasco with doing a toyline based on an R-Rated movie (
Alien, 1979). There were a lot of R-Rated films that got the cartoon adaptations, which also got toylines based on said cartoon adaptations (i.e.
RoboCop: The Animated Series,
Police Academy,
The Karate Kid, Rambo: The Freedom Force. Even the
Aliens toyline in the 1990s was based on an animated series that didn't even make it past the pilot stage, but the figures had been made modeled on the characters from the animated series, so they released them under the film's name), especially between the 1980s and 1990s. In context, it would make sense that
Lightyear is the darker, live action film, which ended up getting an animated series spin-off of
Buzz Lightyear of Star Command (this would explain why the Buzz figure doesn't look and sound exactly like the Buzz seen in the film, because it's based on the animated version of the character, not the live action version, and the voice used for the figure is the animated series voice actor, not the actor from the original film). BUT, since Pixar states that this is the film that Andy and his friends saw to make them want the toy, those kids must have zero taste in films (which makes a lot of sense, considering Andy's age, and he might have thought the film was "cool").