Skype is a Microsoft product so it definitely works on Edge regardless.
There was a very active theory on HN that stated, Microsoft did switch to Chrome just for the V8 Features especially regarding Desktop-Apps and web rtc. The next new thing will probably be Skype (for business) to switch to electron.
You do know that Microsoft makes Skype?
Microsoft didn't make Skype, they bought it and have been slowly grinding it into dust ever since. It's nothing like it used to be.
But they do make it, present tense.
True. I prefer to look at them as janitors, and not good ones either. They seem to be un-making it by removing more features than they've added.