1) I don't use social media lmao, that hostility is just from what I've seen first-hand
2) "calls to arms"
3) Is this something that actually happened or is it just another case of people bitching and crying like an ex-girlfriend over some vague implication in a Trump 5am toilet tweet?
I find myself doubting that orange man said "Lol lmao all those soldiers you gave the US in the GWOT? Rip bozos, they were cringe, gay, and didn't matter." and it's far more likely he said something more along the lines of "Europe doesn't do shit for us and their military sucks" and people sperged out and used the corpses of soldiers that died 20 years ago as an emotional bludgeon.