I've only ever been a government contractor, never military myself, but you quickly learn that some acronyms were destined to be enunciated as-is, rather than spelt out.
He's assuming that because that's what he would do in this situation, because he has the critical thinking skills of a spanner. He thinks every other politician is like him, he doesn't get that most of them are basically just constantly playing in a personality contest, which is something he's never had to do.
There's basically flat support for the war at the moment, there isn't really any interest in removing support and there isn't really any interest in granting additional support (actual military intervention, WMDs). As long as Europeans are not adversely affected by the existence of this war, the support isn't going to go anywhere.
If somebody were to turn up with some actual evidence that say we could have built 30,000 houses but instead we sent Ukraine 20 missiles, or whatever, then maybe that would turn the tide, but I don't think anybody has that data because in most countries military spending is pre-allocated.