If you are a sportfisherman - it's pretty obvious what the attraction is ......
An aggressive fish - a real mongrel
Most people surface fish for them - so the visual aspect is second to none ...... If that doesn't get your blood racing , you're probably dead .
Then that first minute of the fight is pretty hectic before you settle down for the slog fest where you & your gear is tested to the limit.
50kg fish are on the cards - they can & do appear at any time. ....... so you never know.
As a catch & release fish .... they release well.
Add to it some pretty amazing places you fish - particularly on the reefs & it all becomes pretty clear.
Yes there is certainly a lot of content on youtube ...... but only a few do it well & the popularity exists because of how this stuff is often filmed (drones) & some of it is pretty amazing . It's pretty obvious why it attracts youngsters as it's a very active & demanding form of fishing.
Comparing GT fishing & Marlin .....I 'd take a GT session on the reef every time & IMHO the only time any form of billfishing compares is when sight casting to sailfish. Marlin fishing is generally 90-99% boredom.
Chris