Back on topic.
Hmmm I think the thrust ouf this argument is the old one upmanship in Angling Salmon Anglers think they are at the pInnacle of the 'art / sport' of angling and look down on Trout Anglers, who look down on coarse anglers. Specimen Anglers (Carp, Barbel & PIke) look down on 'tiddlerbashers' within non specimen anglers there are the Matchmen who put themselves above 'pleasure' anglers and 'natural venue' anglers that put themselves above commercial anglers and so it goes on.
Now before anyone climbs all over my head with hob nail boots on, obviously the previous is a sweeping generalisation and doesn't apply to everyone, but to someone outside of angling looking in. Angling must have more factions than the Popular Front oj Judea !
Who cares if someone coming back in to angling starts on a commercial, they may like myself branch out to fish both natural stillwaters and rivers (with some help along the way) Each to their own, a fly angler, would say that if a coarse angler can't cast a fly they are missing out on a vital skill, well yes it is, of you flyfish ! If you don't then it's a skill you don't need to acquire,