this is one of the most overrated and eyeroll-iducing statements.
to quote Torry Holt, "yeah i'll mentor them, mentor them right to the bench."
now i don't doubt that Reggie Wayne is a class act, and if anyone would help out his fellow WR core, it would be him. and i'm sure the young guys could pick up on the way Wayne does things that could benefit them. but those are not reasons to sign a player.
you sign players to play. you hire coaches to coach.
EDIT: also i wasn't saying that Wayne's signing was meaningless, i was saying that him signing with a different team for a year doesn't "taint" his long and storied career with his original team.