I think You're right. People who bought bitcoin at the end of 2017, decided that now is the best time to return their money spent. And those who are smarter, not sold, and keeps your coins on)
I do not think this is correct or at least significant. People who bought bitcoin at +$15k were for most new users and big whales imo. Of course the whales made their profit once once the price rises leading it to crash hardly then come the chickens and sold their coins with loss to save as much money as possible.
So people who didn't sell their coins at that time are still waiting for the appropriate level to sell it even with a little profit margin, while big whales don't care at all whether the waves are high or low...they will always make profit at the end!
And you think this approach to the question is correct? New people having no idea about the cryptocurrency market enter the 15K and give their money to rich uncles, is THIS the NORM??? I think the main problem is ignorance of new players. If this problem is removed, we will get a really stable bitcoin exchange rate.