I think 2017 and 2021 will be different, because in 2017 there were so few cryptocurrency enthusiasts that at that time only people who were already in the crypto world who joined between 2015 and 2017 were benefiting from the rise in cryptocurrency prices. In 2017 all altcoin prices went up and many cryptocurrency projects were successful, almost all crypto markets were bullish. Whereas in 2021, even though the price of Bitcoin recorded a record high, it did not make all altcoin prices go up, especially for new altcoins which are quite difficult to rise.
Currently there are a lot of cryptocurrency users and the transaction value has hit a record high in history, I think in 2022 there will still be an upward trend in the price of Bitcoin and the already well-known altcoins but for new coins I think it is still quite difficult.