Where do you get this information that the microphone is in the remote? That's about the dumbest shit I've heard all year, unless your remote is now Bluetooth or something.
Infrared remotes are output light flashes only, and only work when you point them in the general direction of the television.
Now if I'm mistaken about the most modern 'smart' televisions, well just let me know, with reference. Because I'm an infrared hacker, and Hisense and Roku televisions still give to my infrared hacks, output signals only.