If you live in the right jurisdiction consumer protection laws might be able to force the seller to get this defect fixed or have them take back and refund the tv. Where I live (Norway), there is a five year warranty on long lived products, which a tv is, and if it breaks during that period, the seller needs to fix or replace the product. Motion smoothing that can't be turned off seems a serious breakage, and if they…
Is this the standard in Norway, where the consumer can just call something they personally dislike "serious breakage" and demand their money back? Does this work? Would you actually invoke your Tom Cruise argument and expect that to change anyone's mind?
Or is the culture there just so passive and avoidant that they'll give you your money back just so you go away and stop bothering them?
Whole thing seems wild to me.