Nice!
4 Brilliancies in 1 Game??

Yes... your theory seems interesting; there seems to be no rhyme or rhythm to the engine giving out "brilliant" moves. Sometimes it gives !! to a seemingly innocuous move and sometimes even a queen sacrifice demanding at least 4 or 5 move calculation only gets an "excellent move" or "good move" at best. It's been happening to me lately so I can take solace in the fact that those are actually brilliant moves, and the engine's just doesn't want to spoil high rated players much.
Thanks for your insight @Optimissed !
Let me know what you think about this. And are there any games where you (or your opponent) have got multiple brilliant moves (they must be according to the chess.com analyser)? Do share below!