I can never tell the difference between supposedly good audio and the equivalent of two cans connected with a string. Dunno, maybe I'm lacking the audiophile chromosome or something.
A lot of it is just "is the can the string is attached to 3" from the speaker or 3'?"
A mediocre mic placed 3-6" from the mouth is going to almost always sound better than any price of mic placed 5' away, except in sound treated studios with excellent technique and strong post-processing.
Audio is only as good as its weakest link. recording, compress to youtube, compress by youtube, playback. I guess it is possible to not be repulsed by audio compression artefacts and judging from the average video posted by mobile <slur>s it is shocking common.
i'm not an audiophile either, but some videos really had audio that was terrible enough to make me quit that.
examples: some buzzing in the background, high-pitched noise in one of the channels, or audio in mono (you only hear the person talking from the right ear, for example).