I suppose everyone tells little white lies. Quite often they're necessary to make someone feel better or prevent feelings from being hurt. Whoppers? No, that's dangerous and they'll boomerang.
I don't understand how a musician can play 90 minutes on stage and then not dedicate a little bit of time to hang out at their merch table. It's not like digging a ditch or something; you're standing there thanking people for coming out to see you.