lowkey i think ultraman trigger's big mistake wasn't aiming at gooners, bc like shin and rising literally did that to great success. i think the thing is that they aimed at like, the shonen style show gooners, who mostly are into a certain type of show ultra doesn't offer a lot. shin and rising meanwhile mostly went for the normie gooner audience, who isn't as specific about story types and stuff. that's why there was a bigger rise in fans with the latter two compared to trigger itself.
like all three works have legions of horny fans, but i feel the kengo and carm fans mostly moved onto other shows similar to trigger or went back to like, shonen or rider stuff compared to shin mefilas and ken still having a vice grip over the internet in mainstream sites