Yes very accurately Bitcoin is the king of crypto whereas ETH's full ETH campaign to mobilize this is also understandable by its popularity and fast as well as low cost. Bitcoin and ETH make the crypto market so lively.
I agree with you, bitcoin is king because the value of the price is higher than other coins, actually Ethereum is also a very good and potentially good coin. both have their advantages so there are so many people who are interested, but Bittcoin is the first known by many people and many are successful.