This isn't a moral criticism, but a practical one, as argued in the post. Stores of value can change, but this cannot be a fast process as that contravenes the very definition of "store of value." Not unless it absolutely has to happen (facing catastrophe), as I also mentioned.
Well, again, there is no fast process at work here. <0.1% of the store-of-value from gold, fiat, etc. has shifted to Bitcoin. In fact the real number considering all store-of-value asset classes is probably far less than 0.1% but that's an easy number to use. If 0.2% moves to some other cryptocoin next year that will still be an
extremely slow process, but Bitcoin will likely be left behind at that point.
I don't disagree, but I have assumed the usual 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). As long as Bitcoin is "the main attraction" into the space, which as far as I can tell it overwhelmingly is, the points I made seem to hold.