Yes, and one of the greatest benefits that altcions offers is being an alternative to Bitcoin for individuals, cooperate organizations and companies uses.
Altcoins are like the pennystocks, they don't really have any kind of utility and the chances of their success is little to none. The only way altcoins could offer a true "alternative" is if they were actually innovative and offered something in the real world as a "currency" (hence the name crypto-currency) instead of just some toys to be traded in the manipulated altcoin market.
So far we've had none of that...
SOL and ETH are used more to pay for different services in Web3 than BTC - so I would disagree with that, but overall, sure, BTC is just a more well-known coin that is truly decentralized, with its own set of ideals (that may fail to uphold).
The two top coins you mentioned actually have real time usage especially for paying services and goods.
There are other more top coins that have usage, but for other altcoins around? I agree that almost all of them is just another shit in the market which is just used to scam people.