John has made many wild predictions on the BTC price before. Undoubtedly, some alt coins will turn out to become winners while others will fail and disappear from the scene. It truly depends on your ultimate plan - are you investing for the long haul or just trade this nascent market for quick profits? There is nothing wrong to hodl a few well established coins like BTC, ETH, BCH, LTC, … etc and speculate on a few affordable alt coins like EOS.