Could Satoshi basically just do the biggest rug pull ever?

Apparently he has about 600.000 to 1 million BTC which is insane.

Nobody knows who the guy is and it’s easy to romanticize the «doing it for the greater good» concept behind it.

But could he in theory just be waiting for the right time and suddenly liquidate his assets and just crash Bitcoin?

It’s just something I’ve been wondering about, I’m not criticizing BTC at all.