What makes Trigun Stampede attract FTMs like flies?

Much of the fanbase of the 1998 anime was more cismale, but for some reasons this one attracts FTMs and Women like flies.

My guess is that it's the soft sensible pseudonerdy male protagonist, cool yaoi gunslinging guys, characters written to be emotional and a much heavier emphasis on the story, the story feels innately fembrained to me for some reasons

along with artstyle that's eyecandy and fembrained character designs