Everybody has his own strategy. I agree that every portfolio needs to have bitcoin in its wallet but my share is about 50%. Other than that, I have a dozens of altcoins varying from ETH, BNB to shitcoins as SHIB and a small part of casino tokens.
There are so many shitcoins in the market now and some persons are taking the risks of holding large quantities of coins that may not survive the market in a long run. Bitcoin is the major coins that could safe us from the market in a long run so it will be good for us to rely on Bitcoin maybe with large amount of our funds than holding some project tokens that may not have enough liquidity to go far in a long range of time. There are still some project tokens that are good to be hold for just a short while since the market is not that predictable.
Well yes, We have different strategy in keeping our portfolio, We all have different risk appetite and this levels our percentage of altcoins we have. Having majority of your portfolio into altcoin doesn't mean that you are holding a bigger risk against other. I think it's all about the coins we are holding. Like these casino tokens, I'm a bit uncertain to these honestly and I don't plan to hold or acquire one soon.