Evolution is a good metaphor in this article. Biological evolution often requires many generations and many evolutions to manifest large changes. For Windows, getting rid of NTLM seems closer and inevitable, but the date for doing so remains unclear.
NTLM has long been a source of insecurity, especially because of its susceptibility to replay attacks like Pass The Hash -- a technique dating back to the late 90s. But the larger lesson of this article is probably how long it takes to deprecate and replace a protocol, even when it has a poor history of security.
Kerberos will be an improvement, but remember to keep in mind the Golden Ticket attacks against that protocol. In other words, prevent attackers from gaining access to your domain controls and protect your secrets.