I believe that reaching 1 million will be important and symbolic enough. I don't think by then the news will be that, that 1 sat=$0.01, but that 1BTC=$1M.
You are right because bitcoin is still more popular than sat and not many people even know what sat mean except those who have good knowledge of bitcoin and its denominations. Like you said, it is more prominent to say that bitcoin is priced at $1 million per coin than saying that 1 sat is priced at 1 cent. Let's give bitcoin the praise it deserve so that those who doubted this will bury their heads in shame seeing what opportunity they missed due to their ego and doubt.