> Heck, if Trump managed to do that, it would seem to be reason enough to vote for him if you care about being anti-war - the progressive left be damned.
No, it wouldn't.
Co-opting a political position is about rhetorical positioning and has no necessary relationship to substantive policy.
Of course much of politics is about rhetorical positioning, with only indirect "relationships to substantive policy". From this POV though, rhetorical positioning about war seems to do reasonably well at predicting how a president might influence "substantive" choices relating to war.
No, it wouldn't.
Co-opting a political position is about rhetorical positioning and has no necessary relationship to substantive policy.