No, because introducing security vulnerabilities to keep us secure is inherently illogical.
Secondly, this is a pretty stupid way of doing it. 'If you use this client identifier than anything goes' seems vastly more like a stupid coding mistake than it does a sneaky covert backdoor into accessing Skype from the local machine.
"Version 5.0 maintains API compatibility with v4.x but due to major internal changes and potential behavior differences across nearly all API surfaces, semver dictates a major version bump. Also, it's good marketing!"
Anyway, the marketing part worked. :)
In my experience at least the weaker contributors to the groups success, even those that just coasted, were still very honest when asked to assess their contribution and the contribution of others.
Maintaining the app and not moving forward with new features and adding value (because of lack of resources), I would assume it would just die eventually.
It's the corpse model of product development.