What did you mean Altcoin to the moon, the price or the technology ??
Because altcoin is not start yet to getting the moon of price, and still keep in standar of price.
I believe in 2022 altcoin will blow up and hit a moon after Bitcoin moon in end of 2021.
That my prediction.
I also hope it happens because I am putting a lot of expectations on my investment. Also, I am choosing coins that are outside the top 300 because there are many good projects here so if you are looking for a potential coin then you should consider. However, the risk of investing in coins that are outside the top 300 is very high because even a bad news can cause the project to die.