We can agree to disagee. But I'd bet my tablet that what I hear is sticky adhesive - it's not a clicky sound, it's a sticky one. If you ever used double sided sticky tape, or anything like that, you'd know the sound. Especially if you tried to remove it and reuse it.
My screen is very slightly raised on the left side. Not enough for most people to notice (that don't know the issue is there). Touch screen wise it works fine. Mine doesn't sound like that video at all.
For me it looks and sounds like adhesive issue. First it wasn't that bad. At the beginning when I have pressed screen it stays for a while then pops up. After 2 hours of usage (mostly typing) it became what you see and hear on a video.
So far no word from Google, even after posting that video :\