I believe he referred to the drop area as being too wet.
It appeared to me that with the fairway sloping towards the pond from his original lay, he would be justified in dropping the ball slightlu uphill, so that when the ball stopped rolling from the drop, it would not be any closer to the green than his original lay/lie(?).
It didn’t appear to me to be 2 yards behind his original divot, but about 2-3 feet, .. ie a club length, and on that fairway, I wouldn’t call him for trying to get a better lay than allowed by the rules.
FWIW, by looking at the replay, he was using his club to move dirt and twigs/debris from around his striking area, which is considered grounding his club. Usually, as a matter of habit, that is only done by hand and not using his club as a rake.
You obviously know the rules, and know golf - more than I can say for many commenters on this thread. People go popping off half cocked, don’t know the rules or the nuances of what really happened, and then wonder why outsiders call FR racist, hateful, etc. I’m no Tiger fan positive or negative particularly, but ignorance combined with arrogance is offputting on any topic.
Yup, you are right.