Monitor used to have "much" lower input latency, higher PPI, much higher refresh rate and generally higher reliability because they are expected to be constantly on. i.e Their panels have different specifications.

Although I am not sure if most of the above are true anymore especially with OLED. Given how TV manufactures have also had focus on gaming. But reliability is still a thing on monitor. That is the similar to reference TV that uses panel from one of two years prior.

Edit: I had to look up Panasonic TV set and panel and then I discovered they are pulling out of TV production and outsource to external partner. Sigh.

https://www.flatpanelshd.com/news.php?subaction=showfull&id=...