Good article. Its very true and goes inline with why people complaining that their old tvs cant get an update, who may not realize that every year hardware is updated, like buying a computer. Eventually it will be outdated. Back in the day you could buy a tube tv and sit on it for 10 years. Nowadays, screens and hardware is accelerating so fast. 8 years ago I bough a 50" plasma and still use it today. It's not smart and only has 720p. Do I throw it away for a 4k and smart interface because I want newer features? Probably at some point.
I always tell people with computers and laptops, don't spend on the top of the line hardware because it will be outdated in a year or two. I bought my 50" plasma on black friday 8 years ago for $600. Today I can get a 50" 4K LG smart tv for $299 on sale!