Nah. Not ironic. Coach doesn't have a social media account. Not a public one at least.
And for all of the consternation about Stephen Ross' support of Trump, the Fins are probably one of the more socially conscious and aware NFL organizations. Flores asked Kenny Stills last season before they traded him, to at least call your boss up and talk to them first before going public with some of these issues, and I'm guessing that's what happened here. Once Coach informed them he he wanted to speak on this issue, I wouldn't be shocked if it was Ross' idea to use the Fins resources and branding to go with it.