I also disagree with the whole fly fishing is a progression. If it is... I guess that means I have progressed and now de-evolved.
I toss pin, level wind, spoons, spinners, fly and spey. I can say that out of all those methods, the ones I enjoy most now a days are spoons and spinners on a small spinning outfit. Is the reason I like it because I catch more fish? No. It's because I enjoy the method, I love only having to carry a box of spoons and leader. I love how light they are, how easy they are to cast and how accurate they are. What I love most is the ability to keep moving and cover water faster than anything else, and of course I love the bone crushing hits. It's not at all about the fact I catch less fish on the fly, or don't know how to fly fish properly, it's about what each individual enjoys most as far as method goes.
I fly fish all summer for summer runs, and all fall for coho. To be honest, I wouldn't if it weren't for 2 reasons. 1) I find flies more effective for them than anything else (small sparse patterns and a long leader means fish see the fly first with nothing else around - float/weights - and many times the fly imitates exactly what they (steelhead) are eating). 2) Half the time I am fishing fly fishing only rivers... if they weren't fly fishing only, I'd be chucking metal at em.
Do what you like best, and what you find works best. Any fisherman that tells you they don't ever want to catch fish is lying, so if you are limiting your fish catching abilities because you feel elitist and want to stick to one single method, go for it - but don't push that opinion on new fishermen who haven't caught a bunch. I personally take multiple set ups, fish flies first, metal second and then bait if I'm really hurting. Most days I don't make it past flies if it's for coho.