Most will. When Bitcoin will reach $20k and more a lot of hype will happen in around crypto. That will bring a lot of speculators and stupid money in crypto and they will just buy whatever it is listed on exchanges.
Nah, I think it'll be completely different this time. There's no oje that was in crypto in 2018 would've picked a lesson or two about following hype and buying chasing shitcoin pumps. If any altcoin 'might' outperform Bitcoin is the next uptrend, It'll be the ones with strong fundamentals (and maybe tech). Like BNB and Chainlink to name a few. Since 2020 is the year of Bitcoin thanks to the mining reward halving, I think more money would be flowing to bitcoin than altcoins.