Everyone will have their own opinions on the situation, were they not on the field 30 minutes prior to game time, yes, did their coaches take the fall, probably. But like stated, they were not “late” they were still early.
And as far as the umps go, they take shit absolutely, unfortunately that comes with the job and they know that. The statement about the Umps is really about holding EVERYONE to the standard, if you’re going to give a team shit for be 29 minutes ahead of schedule and not 30, you also need to have a conversation with the staff to be there ready to go as well. Simple.