I don't think they're all stupid, they will sell gradually and announce all of it after they finish selling it. so no one realizes that they have sold their bitcoins. and when the announcement is published there will be a momentary dump.
But I only see a reason why Elon Musk would want to do this, to either make the market to dump and to support Doge.
Or intentionally crash the market and buy on its dip getting more BTC along the way.
If Tesla purposely dumps their BTC holdings, there will be a short-term crash on the market, the crash can possibly get longer if Elon uses Media to FUD the BTC market.
If you want to imagine something wild, why don't you think what if Microstrategy sells it's bitcoin altogether
If that happens the BTC market dump would be a treat to those who are looking for a window to get in. I bet it would be a feast
.
But anyways, talking about what would happen here, first of all the market would obviously react in a pretty negative manner,
That is given, a sudden influx in supply can greatly affect the price in the market negatively.
many retailers will sell their bitcoin,
or these retailers might find it a great sale to buy BTC.
but what would eventually happen is whales will look at this time as buy time and they will buy truckloads of bitcoin and then wait for another bull season.
I think minnows and algae would see this as an opportunity to book a possible profit. Only weak hands will be swayed to sell their holdings. Believer and supporters will see this as an opportunity to bag more BTC.