2 million HIVE sold at market price on Binance would crash the price to 0. This is the order book on Binance, and you need to understand that there are a large number of orders placed for show. They are constantly added and removed, and in the event of a price drop, more than half of them would simply disappear from the order book.

That said, yes, it is possible to sell 100k, 200k, or 500k HIVE by spreading it across several exchanges, and it wouldn't significantly affect the price. But to talk about dumping several million, even across all exchanges, without affecting the price is not realistic.