Why is Vizio not allowing a firmware downgrade option for PQX-H1??

It's absolutely rediculous that a TV gets broken with updates and we are not even given the option to downgrade firmware. This is not playstation where the risk of firmware downgrade leads to jailbreak. This is a legitimately useless TV with a lot of issues that keeps getting worse and worse with each update. How incompetent is Vizio to not be able to solve these issues after 4 years and not give us the option to fix it ourselves? I feel scammed. I was defrauded of 1400$. Why isn't there any journalists out there badgering Rtings to take down their review of the PQX?

I did everything right, I looked up reviews, I followed Rtings reviews and researched the Best TV value, I had the option between Sony, TCL, LG, Samsung but settled with Vizio. I compared the prices and features and found Vizio to cover the best value. What could I have done to forsee this treetment from Vizio. I always consider myself as a person of caution when it comes to purchases, how could I have known this would happen.

Now I have a TV with non functioning VRR, a FALD that doesn't work in PC mode, sound crackling in eARC, broken game HDR. I can live with all of these issues except for the FALD in PC mode. That's literally the main selling point of the TV, is the 384 dimming zones. That's why I bought it, how is Vizio so incompetent that they can't enable local dimming in PC mode. It works in PS4 and Nvidia shield. Can't they find a way to make it work in PC? It used to work 1 year ago before their update, can't they revert to that firmware? Can't they give us the ability to downgrade firmware ? Don't we deserve better than this treetment?

Literally nobody had this horrible treetment from other TV brands like Sony and TCL, Samsung , LG. They had their own issues in 2020 but nothing as severe as Vizio.

Why do we have to suffer like this ? We paid good money for this.