I don’t think the US defense industry is worried. Do you know any sane nations around here?
In general it’s not like war is about who’s right or moral. It’s more about who can bring more and better weapons to the fight.
A change of administration in the next few years, will not mitigate the taboo that has been broken.
The US sells 120 billion dollars a year of weapons: https://www.state.gov/fiscal-year-2024-u-s-arms-transfers-an...
I suspect, though I'm not sure, that the point was more that a nation that rejects science in favor of a different kind of ideological purity (lack of virtue signaling as its own kind of virtue signaling) is a nation whose weapons are no longer likely to be the better ones.
In fact, the latest news is that Trump is expanding our circle of friends when it comes to advanced weapons, offering India the opportunity to purchase F-35s.
This is an exaggeration. The larger European military powers spent enough on defence to be able to operate without US assistance in a range of circumstances (e.g. the Falklands war). But Europe did not anticipate having to defend itself against Soviet aggression without US assistance.
In fairness, it would have seemed crazy, not so long ago, to think that the POTUS would be on friendlier terms with the leader of a Russian dictatorship than with the democratically elected leaders of France and Germany. But here we are.
The Falklands conflict was almost half a century ago. It is doubtful that the UK could respond today like they did in 1982.
The video "The Navy With More Admirals Than Warships"[1] addresses that exact scenario, and talks about the current woeful state of the British Navy today.
You are right to question who your allies are.
"You have the watches. We have the time." There are many ways to win a war.