Sounds like an economic NATO (without the USA). It's good that other counties are waking up at last. Taking the hit now (and blaming it on Trump) will make them stronger on the long run.
No it's not. The point of making an alliance is that you're not stuck with strategic autonomy. You can tell other people that if they mess with you, they're also messing with whoever you're allied with. If you were autonomous, that wouldn't be true.
Again, not being autonomous is the purpose of an alliance. It's the only purpose, and this is just as true of NATO-at-inception as it is of everything else. Portugal and France didn't get the ability to tell their own citizens that making trouble would get them squished by the United States. But they did get the ability to tell Spain that.
If you wanted to be strategically autonomous, you wouldn't have to do anything, because that's how you start out.