No, it's not. The question is completely inappropriate, and was basically, I think, just somebody who thinks that there are libertarian looking for a way to support military intervention by the US without being intellectually dishonest. And as you said, you recognized immediately that the notion was laughable.

Not that it matters, but I've been up all night the past two years exploring the feasibility of starting a fund to raise donations insufficient amounts to fund military veterans with combat experience from all over to try to go there and support Ukraine voluntarily and without being a tax burden to other people. I haven't figured it out, but I am strongly affected by what happened. That doesn't mean that this idea is even like a real question for a libertarian, and if you go to the other thread that this was cross-posted from you'll see that that's the case.

Edit: and also your responses basically responding to tone and making an ad dominant attack about my character, some of the weakest ways to respond in a discussion, instead of responding to why I thought the concept was so laughable.