You're entitled to your opinion, and have every right to disagree.
My Mac and iPhone are stable, and it's rare to restart over instability. If Sony TVs were stable, then routine restarts wouldn't be needed.
Neither my iPhone or Mac require routine restarts to fix bugginess. Because, they are STABLE. They are stable devices and have stable software/operating-systems. A stable OS automatically manages system resources. It's not that it's "hard" to restart, it's that it shouldn't be needed outside of software updates on a TV! Don't forget, this TV isn't cheap, and people pay in excess of $1k for this model. If it's a smart TV, then it should act smart!
TV's should be entertaining, and require low maintenance. There is a history of instability with Sony smart TVs. Just read this thread. What I'm staying, is that a stable TV shouldn't even encounter these issues. Customers are unhappy, so Sony is failing in that arena.