That part addresses issue #2 I mentioned earlier (which is frankly regardless of 4K resolution, those are must-do’s for using any TV as a monitor).
But for professional work it still doesn’t address that many TV’s are still using lower quality panels, so your color reproduction may be suspect. Might be totally fine for CAD work, but not if you are doing anything that requires color sensitivity.
Once you get a TV that won’t suffer from those issues, you’re likely to have spent more than a good IPS monitor anyways.
Real monitor porn is the Apple 5K panel, but they screwed themselves over since there is no interface available to power that externally yet, and the iMac on it’s own is disappointing for professional work…will have to wait a few more years on that one.