There is value in reducing reflections off the TV, but there is a tradeoff between having too much absorption in the room and handling those reflections.
I am not a fan of maxing out the surface area devoted to absorption, and for that reason I tend not to recommend dealing with the TV except in cases where the more critical reflection points are not treated. The most important relfection points (as noted in my tutorials on first reflections) are critical, but a room should be more reflective than absorptive. If a small room is still too lively after about 20% of the total flat surface area is treated with absorption products, then diffusion should be added, not more absorption.
Having too much absorption leads to a dry, brittle, dead sounding room with exaggerated bass issues and no ambience whatsoever.