Earlier quoted context omitted.
Smart TVs are a good idea. Who doesn't want less crap plugged into their TV? However, TV manufacturers – for some reason – are ill-suited to developing the software that would make for a good experience.
Smart TVs are a terrible idea for the same reason that combined printer and scanners are a bad idea but with the negative aspect magnified many times. The cost and life expectancy of each part is very different and you don't want their replacement/upgrade to be tied together. A display panel should last you more than a decade and probably costs many 100s or 1000s. The 'smart' bit is probably worth less than $200 and…
I think combined printers and scanners are a much better idea than Smart TVs because (1) you get more benefit (footprint savings) from the combination with all-in-one printer/scanners than with Smart TVs, and (2) IME, printer replacement is desired more often than scanner replacement, and the printer is also the more expensive part; so you lose less by tieing replacement schedules together compared to Smart TVs, where the "brain" is the more frequently replaced part when replaced separately, but the display is the more expensive part.