Yeah, but it's okay.  Some of the altcoin prices rises are just manipulation (like DASH) and while Ethereum is very popular, it's not going to get close to Bitcoin with its centralised team and the annoyance of many Bitcoiners about shitcoins.  Ethereum's nearing its peak, and I don't care if loads of different altcoins all have tiny market caps, because if 100 coins had 0.5% each of Bitcoin's market cap it would mean nothing to Bitcoin's actual dominance.  The only thing that's scaring people is the possibility of a real competitor like Ethereum, but with a lot less real adoption I don't think it has much further to go.