The important word here is meaningless. Correct me if I’m wrong, but bowl games count toward overall records. That would mean that they are not meaningless.
No doubt that other than 2-6 bowl games they have less meaning than most conference games.
This is why I always say I’d rather have 10-2 with a bowl loss than 9-3 with a bowl win even though both teams finish 10-3.
They aren’t meaningless though.