This is a common thing to say, but it's untrue. A cheap and nasty instrument will have bad features that are noticeable even to beginners. Things like poor quality finishing, hardware that rattles, sharp edges on the edge of the fretboard where the frets haven't been smoothed off properly, etc, etc, and it's really uninspiring if your guitar isn't enjoyable to hold. Even more "advanced" things like having the right action or a comfortable neck radius are noticeable early on. Tuning heads are another big one, cheap tuning heads are awful (the difference between good and bad ones is like night and day), and if your guitar is constantly going out of tune due to that or something else, and if you're not completely tone deaf, you will notice and it will annoy you.