Yeah, the article seems to fail to mention that the current version of Windows, which almost everyone had two years to upgrade to for free, has a version of Skype that isn't vulnerable. Given that Windows 10 has been out since 2015, and everyone with a Windows license going back to 2009 had a free upgrade path, failing to mention that Skype on Windows 10 (they don't recommend classic Skype for Windows 10 users) isn't vulnerable borders on the FUD barrier.
It's gotten significantly better over time. I can't remember the last time it crashed, sync between clients of the chat log is kinda wonky sometimes but that's just Skype in general. Not positive on feature parity, I've been on the UWP version for quite a while and couldn't tell you what's different anymore.