There's no doubt about it I mean I am pretty sure that bitcoin will going to pump again and if that happen I am pretty sure that altcoins will going to follow. But regarding about OP's concern if we were going to see a new altcoin boom soon all I can say is this one is unsure. The market is so volatile and unpredictable, like soon as the year 2022 comes we are eyeing the possibility of the soaring of metaverse projects, some manage to boom before the year 2021 ends, some new projects are still struggling, so who would know about it because I am also waiting for another speculations.
It's definitely not a sure thing, and I do agree that if we see a boom it will be together with bitcoin and not just altcoins. We need to realize that we should be focusing on something that would be a bit better than expected, not something huge but something that would be small time increase in the long run.
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^ This makes sense because as we know the market will grow as together with BTC and altcoin will grow as BTC grow as well.
It is normal now that we saw altcoins will boom and we think not a genuine growth because that is a hype coin. But later on, it will drop the price after the hype was going. But if there is no hype, everything will depend on the BTC price movement and the market has an impact that all major altcoins will increase altogether. So far I did not see altcoins that have the potential to boom soon and even though NFTs cannot do anything at this moment.