I'd say yes, they are powering down.
I use (and like!) Google News. I've added such topics as electrical blackouts and coal. You can create as many sections as you like, each with terms you choose.
I notice quite a lot of electrical blackouts. Some countries are having trouble producing sufficient food.
There are a variety of other indicators, including one you've mentioned - immigration of third-worlders to our respective shores. In the case of the U.S., we have individuals from Mexico and points south who pay large fees to "coyotes" that smuggle them into the U.S. They then take dirty, dangerous jobs for relatively low pay. So one must ask what motivates them to do that. I strongly suspect the answer is extreme poverty.
Of course, in the U.S., the illegals work the system like mad to grab any welfare benefits they can.

There is also a subset that seeks to profit from crime.
At the risk of going off topic, we in the first world must find a way to hold them at bay. They are going to become more desparate as powerdown and dieoff proceed. Hopefully, we'll do what's needed to keep them from swamping our lifeboat.