I do not think any wise investor would do that, no matter what happens to the bitcoin price, whether it rises or falls to any level, actually selling it off to buy altcoins that are not as consistent as it is, is bad trading imho.

It's hard to find a good altcoin in the crypto market this days, Bitcoin has completely overshadowed it, and I think what any wise investor should do is to try and own more bitcoins while it's still affordable for them.