I agree that your hypothesis is a possibility. But, what type of advantage does identifying as LGBTQ provide that is not in being a heterosexual?
Which is the same reason White students lie about their race.
https://thehill.com/changing-america/enrichment/education/57...
For example if universities would take factors like poverty and access to educational resources into account, rather than using racial identity as a inaccurate proxy for this, they'd likely achieve more equitable outcomes, in helping talented but disadvantaged individuals gain access to higher education.
> For example if universities would take factors like poverty and access to educational resources into account, rather than using racial identity as a inaccurate proxy for this
That’s equality — as in “equal opportunity” and we had that before “equity” was introduced.
By contrast, equity is a fundamentally racist idea which emerged from a collectivist authoritarian view of the world which tries to fix past wrongs between purported “racial groups” by introducing present discrimination to “correct” past discrimination.