Perhaps I'm missing something, but what is inaccurate about that statement? It's actually kind of refreshing to see an article point out that the 21 million supply cap isn't a real issue because coins can be divided.
Because there is a current limitation to how many times it can be divided. Any change to that would require the tacit support of EVERYONE running the new client, which given the world-wide spread of Bitcoin, wouldn't be an easy thing to do, if it was even possible in the first place.
Bitcoin valuation would have to be VERY high for us to even contemplate it, and frankly, even with BTC at some crazy number like $1,000,000 USD a coin, a satoshi is 1 cent in value. So, even if we went an order of magnitude higher the lowest unit value would be pretty small still.