Who knows?

Because the real answer from a moderate PoV:

Love is love. It is special only to those who share it, and sometimes to their peers and onlookers.

It is not inherently more special one way or another, so celebrating it for 1/12th of the year (and let's be real, they virtue signal about it the other 11/12ths) is stupid.

Having a black history month is also stupid because then we'd need a month for every other race. But that isn't the case. And black history month would be fine if they didn't virtue signal the other 11 months of the year too.

Frankly: I firmly believe that "pride month" bullshit is specifically to sow division.

We dislike them, they dislike us, we dislike each other within our own communities because we think one way or another.

It splinters people in several different directions even within their own political spheres. It has to be by design.