I think the whole thing is the msg.
I think that luffy attacking marineford to do his ritual mourning Ace's death shows he's ok now and getting over it. Ray and Jimbei being with him also shows that he's in good care and waiting for them with rayleigh if they want to go. They were all in a hurry, prioritizing on going to help luffy but now the news paper shows he doesnt need help. The 16 bells and the tattoo means a new age I think, and that when they come back to be ready to kick some ass.
now the crew will take their time getting to luffy, like zoro (if he ever gets it) will train some more instead of just leaving, robin will see what the Rev Army wants and maybe meet dragon, etc etc..nami was mad coz she was all crying and worrying turns out he's fine and she got the town pissed at her for nothing xD
I like this.
"Guys I'm okay, there's no need to worry. Don't rush back take your time. We'll meet when we're stronger ."
Works for me.