Rainbows were commonplace on everything related to kids; always on their toys, one of the first things they learn to draw to help understand the colour spectrum. They've been strongly featured in both children's films and books, as well as usually found on some charities' logos.
The hijacking of the rainbow on behalf of the progressives has probably been done subliminally to psyop kids towards it.
You’re not totally wrong. Kid abusers whether gay or “straight” are disgusting animals that need to be put down.
However Dems have politicized the gay stuff and ruined the rainbow. Like anything else they touch, they completely ruin it.