I've always noticed quite a bit of variation in shirt lengths, and it's one of the reasons I always preferred to try shirts on before I buy them instead of receiving them as a gift or ordering them online. Because inevitably when someone else buys them for me they're too short, and I never wear them because I too don't like how they look.

But the last time I bought a shirt was something like 5 years ago, so perhaps the problem has just gotten worse since.