You are correct in WP being dead. That has been a poisoned chalice for a while. I disagree with the dropping WM 10. Android may be the most popular, but most popular is a subjective matter. Most people I meet, and I meet a few in my working day, have no idea what android really offers. Android survives on large OEM's continuously releasing 'pretty' fashionable phones. If you took out one, let's say Samsung, being one of the biggest purveyors of devices, what would you have left? That is what keeps Android alive. Shiny new phones every 12 months. I would hazard a guess that a large percentage of users have no idea about the full potential of any device, be that a flagship or something that the fashionistas' would buy to look good in front of their mates.
At least the w10m OS will be cohesive with the entire W10 ecosystem, giving a cross device experience. I agree that it is not a finished product, it never will be. That's WaaS. Continuum is, at present, unique, and will only improve. MS taking a step back from the mobile world, after the debacle that was WP, and the myriad of devices, can only be a good thing. It gives time to develop, to asses, to improve, and then they have the breathing space to decide whether or not to continue with the mobile platform. With the array of OEMs jumping on board, this has to be seen as positive, if not damned miraculous!
I don't really see where the author of the item was going. People won't buy a Microsoft device on W10M, so how the heck do you persuade them to buy one with Android on it. The android market is already saturated. From what I've seen, the Priv isn't doing too well, and as we know, most of the world has heard of blackberry!