What's wrong if indeed we already have the capital to invest in Altcoins, we buy and try to investing in it. Because it has been proven if we choose some right Altcoins to invest, we definitely will gain more profit.. this can be said as an opportunity to gain a profit opportunity in investing terms.
Well yeah i don't think there's anything wrong with choosing one over the other. Some people really have the knack for trasing with alts ever since and i don'tvsee any reason why they have to change that because of bitcoin price being high. If it works for you then by all means do it.
It would be works if people understand altcoins well, many people want to buy altcoin 'cause most of altcoins price will be different after short duration like 1 day, So people can get the profit from it or even a loss. But now, no need to wait pretty long to get profit from bitcoin.