Yes, the article still gives good advice for SQL Server.
I was meaning in the more general sense - Oracle hadn't released 12c yet, Postgres was at 9.2, MariaDB just released 10.0. Lots of changes in the other DBs to make them more competitive.
> One thing that has seemingly changed for SQL server 2016 is the licensing cost... $14,256 per core now??? Or is that only in a 2-pack?
That's for a 2-core pack with Software Assurance (maintenance), so it's roughly half that. It's the same cost it's been since SQL Server 2012 when Microsoft switched to per-core licensing.
Prior to that, it was per-socket, but still roughly the same cost for quad-core servers.
Nothing about the article has changed in current versions of SQL Server, actually.