I don't think of myself as an expert, but I know what I like and don't like. The only thing I may be an expert in, when it comes to audio, is finding ways to spend money!
Seriously, this hobby of ours is interesting- I'm always learning and discovering new things, nuances, and getting a kick out of it in the process. I also get a kick out of things that are hailed by some as marvels, and are, to my ears, utter BS. Tice clock anyone?
Its all in the service of the music, which is why I cling to FM- free music, and am quite content to listen to radio stations world wide via tune in radio, on my phone, which is then connected to my preamp.
Can I set up a turntable and install a cartridge? Sure. Can I fiddle with speakers placement for a while until the speakers disappear? Yes, but none of this makes me an expert. Just someone with some experience. Going back to the 70's