You are right. Now many people are looking not for the most popular, but for the most profitable cryptocurrencies to earn more money on the price growth.
Bitcoin is the most stable cryptocurrency. A lot of cryptocurrencies including Ethereum and BNB growth in price more active than bitcoin.
Bitcoin is the most popular crypto asset. It has the biggest capitalization and market dominance.
If a person needs stability he buys bitcoin and uses it for investment perposes.
When people what to have a big profit there are a lot of assets that grow more than bitcoin but are not so much stable like bitcoin.