Very interesting. I had my tonsils removed when I was 30 because of repeated infections. It was done in a doctor's office and I was awake during the entire procedure; the doctor gave me a drug that was unlike anything I had had before or ever since. It made me fearless. Even the scapel going into my mouth (which was locked open by some device) elicited no concern.
Based on what you write, I was in more danger than I thought at the time.
Most T/A’s in adults are done in hospitals because of those risks....even with laser instruments the risks for complications are higher in adults then kids under 6.