bitcoin and altcoins have the same risk. but indeed the advantages of altcoins can give us greater than bitcoin. That's because investing in altcoins with strong growth requires a large amount of capital to earn decent returns. while altcoins have a surprising move.
It should be noted that there is a possibility that altcoins can be severely crushed when the value of bitcoin makes the altcoin market collapse.
Bitcoin and altcoins never have the same risk. When you say altcoins there are good ones and high level ones but there are also very low level and not even listed on CMC ones as well. Bitcoin and ETH may have the same risk I can agree with that, same amount of drops and increases in the % column but when we are talking about something so new and bad that it is not even listed anywhere could go to zero over night and nothing can stop it. Which is why I do not believe that all altcoins are the same. This only supports what OP has said, there are ones that will recover from this, recover from most things but there are also ones that makes zero sense and will never be recovered.