He claimed that this specific set of people is seriously impeding the adoption of Bitcoin. As they have the ability to shock the entire system with sell/buy. Avoiding a centralized authority controlling the system is one of the issues that Bitcoin seeks to overcome. If there is a large demand and widespread adoption, a supply shock would then occur.
That's why bitcoin is growing and developing today, because there is a buy/sell system running in it, allowing people to take a role in investing, while centralized authorities do not have access to the bitcoin travel system. The existence of supply and demand makes bitcoin continue to be in demand and used as a promising investment asset by many people.
While the adoption has been quite widespread, bitcoin has been used in various countries and is not only limited to the investment function, but the adoption of payments has also been enabled in various places at this time.
However, the issue is still present and may be more significant than the use of fiat money. Unless Bitcoin holding changes in any way. I believe the system should be changed such that each person is limited to holding a certain quantity of Bitcoin.
This looks so ridiculous if you know bitcoin as a decentralized currency, no one person or system can limit the amount of bitcoin ownership that people have, bitcoin is different from fiat currency so it is impossible to have a formula for limiting ownership.
Bitcoins in circulation are also public and recorded in a ledger that anyone can view, so there is no reason to limit the number of bitcoin holdings held to a certain amount, the concept you are trying to offer would seem confusing for a decentralized currency.