the funny thing is that nobody will ever do that. The moment someone uses quantum computing or any other technology to crack bitcoin in a visible way, the coins they just gave to themselves become worthless because confidence collapses.
Well, they wouldn't go for the trillion dollar wale addresses.
They would hack random, long unused, dead addresses holding 5 figure amounts and slowly convert those to money. They would eventually start to significantly lower the value and eventually crash bitcoin if too greedy, but could get filthy rich.
There are some Bitcoin puzzles or old wallets that give some plausible deniability.