His view is that devices are changing, so while specific "phone" market share may be low, phones may not be just phones in the future. They want to do with phones what they did with 2-in-1's. Make them run like computers and phones. It's a new category in itself. The new surface phone is due in september which will have an intel Core M cpu. Now that's just a rumor. But this one would hold you off long enough. I will probably sit through the first revision of the surface phone and wait for the 2nd one. By then I'll sell my lumia 950xl.
As long as there is windows 10 there will be windows 10 mobile, that's pretty much his statement. They won't give up on it but rather change the way people see these devices. I bought mine knowing a new phone is coming because I'm not going to wait a year for surface phone. And given it will be a new tech it won't be so perfect. The phones are all stuff that have been tested and true for a long time. The Qualcomm chips have survived the test of time. We don't know how intel chips will do.
Again, I think you should buy it in an MS store and then return it if you don't like it. But do update it to latest firmware and OS build after getting it.