Old news
I stopped using Skype once MS starting enforcing MS logins for using it and I could no longer use the minimalist and usable client for MacOS. For chat there are hundreds of alternatives and for conferencing Hangouts has been more stable for years. Video chat has only ever really had novelty value but, again, Google has this nailed.
I have one customer where I have to use Skype for Business on their hardware and network. While it generally seems to work for me, many users complain that it is unreliable for voice so they dial-in on their VoIP lines which are sharing the ethernet with their computers.
Biting the hand that feeds IT
