It can be vacuously true if GGP doesn't know any millenials!
it's a pretty slim majority 55%
If like 50% of people use iPhones, which they do, how can it be possible to not know anyone young who uses one? Just doesn’t pass a common sense test to be true.
How does that change if the majority is small or large? Like 1% or 10% what difference do you think that makes?