I agree it seems like if they really "needed" braid in these conditions they would use it one way or another.
So what about fluoro vs. mono/hybrid lines? Fluoro is more expensive and there could be more profit involved for the sponsor, would make sense for them to be trying to advertise that more, right?
I don't use a lot of fluorocarbon, but doesn't it need to be changed out more often than mono/hybrids? Pros obviously can change it as much as need be, so that is not a factor for them.
But is fluoro that much better than mono or the hybrid lines? I recently talked to a saltwater guide who did not think the "invisibility" of fluoro was a real thing, but of course people also like the low stretch and abrasion resistance.