Those are not comparable. This has about 2.5x the pixels of a comparably sized 4K TV which means lower yields for manufacturing, plus it doesn't have the same economy of scale of a discounted consumer TV. Also it integrates a stand with USB hub, a webcam, far superior color gamut than your $200 screen and Thunderbolt 4 with PD.

But if the extra pixel density and other features aren't useful to you, then no reason not to get the vastly cheaper device.