The memecoin boom was also big in 2021. Millions were lost on these schemes and some became very rich doing it.
Prior to this we had seen similar patterns. ICOS in 2017 and the shitcoin boom in 2013 and onwards with altcoins.
Less than 2% of these survive. Historically it's been exactly the same with no exceptions. But with memecoin it lasted longer due to the extended bull market. Wait till the next best market and you'll see it dies out.