Your posture that the wild press and members of forums such as this, the twitterverse, etc were always with Mattis's views on international issues is comically wrong.
I could point to 20 stories in the press where he was described as the adult in the room, long before his resignation. What can you point to?
I do not have to prove that anyone, Republican or Democrat, were "always with Mattis's views." I haven't made that argument.
Whatever criticism he may have come under for providing support for Trump's political stunt at the border, this does not mean that the concerns for his leaving, and the concerns for the
reasons he is leaving, are not legitimate.
You seek to delegitimize those concerns only because you support Trump in anything and everything he does, no matter the damage to the country. An idiot, or not a patriot.