I don’t have strong opinions about fly fishing.
I know it is a rabbit-hole of a hobby: a sucking vortex of ever-more elaborate flies and frightfully expensive rods and reels, and has bound up in it about as much accepted wisdom and voodoo as in any hobby with an impassioned following. But I certainly wouldn’t know how to correct someone’s cast or tell you what flies a trout likes verses a small-mouth bass. That’s because I’m unfamiliar with the sport. And even if I saw someone doing something that I thought was wrong, I wouldn’t be comfortable correcting them because it’s just not my area of expertise.