Not all top altcoins are worth buying, i just recommend eth or bnb over others. Agree that there are a lot of altcoins that are heavily bearish and worth trying but very risky as not all will survive the extended bear season. When bear season comes is an opportunity to buy cheap coins and wait for the bull season to come but do your research before buying.
Ethereum and BNB are certainly unquestionable and in the long run it's totally worth it,
but even so that does not mean other altcoins are not worth buying because it all depends on our own research,
for sure there are other potential coins and we can buy them