I don't disagree, but I have assumed the context here is basically Bitcoin investors "branching out" into some altcoins. One could make a somewhat valid criticism that this context is changing to small degree, the best examples being Ripple and Ethereum and maybe Dogecoin, where they are actively trying to source users and investors from outside the Bitcoin community (BitShares to an extent as well).
There'll be a new monero investments website soon as well, which presents the investment case in XMR without basing it on BTC, and also lists the options to buy it directly with fiat.
Monero has lost ~90% of it's value vs. BTC since last September and doesn't seem to even be listed on cryptsy. Not exactly overtaking Bitcoin here.
The only difference I can see with it compared to Bitcoin is it offers decentralized and trustless mixing, as per these diagrams.
You can implement the exact same distributed and trustless mixing mechanisms in wallets that live on top of Bitcoin. Sorry but I see nothing innovative or unique here. Just a price pump.