I say you're half right.
He didn't want them.
Why would they worry about insulting a player they clearly didn't want?
It wouldn't undermine anything if they could validate it with reason, which obviously you are saying they had.
If anything, by not offering, they would have made a real statement.
I agree it would have made a real statement, but it was a statement no team can make by themselves. From the perspective of future max FA's, it would look bad because they had said all season that they were going to offer him the max. If they suddenly offered him less or simply said "Piss off, we don't want you" it would look bad to other players. So, they basically went through the motions and he left.
You can stick to what you think all you want, but people who were in the room said it was obvious that no one wanted to be there. It was mutual.