I agree with your opinion. because many people will hold Bitcoin and Ethereum as if they were storing gold.
You need to know, actually Gold is a true stable value, where currency inflation seems to make the illusion of rising gold prices. Whereas what happened was that the price of money had fallen. Whereas Bitcoin is an asset that refers to the FIAT currency, the increase or decrease in the price of Bitcoin is due to the fluctuating supply and demand.
but I would like to add that for now a lot of people are keeping BNB because this coin has great potential because the market is very popular with many people.
a better reason is that BNB has succeeded in being a solution to the phenomenon of increasing transaction fees on the Ethereum platform, so that some developers (who also automatically bring their community) choose BSC to be their Dapps platform. That's why BNB has become popular at this time. We could see more intense competition when Ethereum 2.0 was released