If someone in a shop copped an attitude like that, I'd run like hell. Some folks need to cool their jets and lose the attitude.
I think a lot of people (me too?) over-complicate AG brewing because they're people who really like tinkering...endless tinkering. Some people just want to make beer and don't enjoy building gizmos or solving puzzles. Tinkery people are attracted to AG. At the shop I part-time at, many or most of our AG customers are engineers, machinist/fabricator types, and the like. Many or most of our kit and extract customers are people who are more looking for fun and also hand crafted beer, but just don't care to fiddle with things to make 'em work. There's enough room in the world for all of us, and the world needs more homebrew!
I can see why some people just plain don't want to do AG- a bit more equipment (takes more space), full boil instead of partial, more wort to chill before pitching, more temp measurement, more calculations. Some people just don't want the fuss, which is fine. Buy an ingredient kit, throw the pot on the stove, and have an easy and fun time of it. The last time I helped a friend with an extract kit, it was easy and fun hanging out. It's exactly what many people are looking for in a hobby. It really didn't feel like "brewing" though...but that's because I really enjoy taking lots of measurements, scribbling lots of notes, and controlling every aspect of the final product.
It's kind of like bread from a bread machine and a mix or making it from scratch. Choosing proportions of different flours, perfecting kneading and rising, getting the texture just right- compared to "dump it in and turn it on." Both methods make tasty bread.