I bet that is NOT true. I bet most people spend an excrutiatingly long time making their first quilt. Ripping and resewing and ripping and resewing and oh a little recutting and uming and ahing and reading oodles about the next step. (Or is that just me ?). As a result I bet first quilts are generally something to be quite proud of. Yes they will serve as a sign post of how much more we have learned in later years but that is to be expected.
I bet the 'worst' quilt we make is the first one we rush through - letting one to many 'that's good enoughs' go by.
But I might be influenced by the fact that I just finished my first proper quilt. All washed and resting proudly on the couch. (Yeah me!).