From my POV, the "if we didnt spend so much on military we could have healthcare" argument boils down to someone holding 2 opinions and presenting it as 1.
Opinion 1: War is bad, we should spend less money on the military and stop creating new wars
Opinion 2: Healthcare should be government subsidized (Universal Healthcare). If we are already anti-war, let's put the savings from not doing war into healthcare.
I understand your point completely though. Most Americans are paying more than their fair share, while the oligarchy clan pays less than one of us at the bottom. We (the 99%) should be able to get healthcare by taxing appropriately and getting rid of the corruption at the top. It shouldnt be tied to military spending.
I think what you're saying is correct. It "widens the lens" of the issues out to the system being corrupt which is completely true. I dont think most people have faith we can fix the system (at least within the next 2-6 years), so we are coping with smaller thoughts of just having the option to be anti war and pro UHC.