I'm not referring to the price of Bitcoin (we all know it's going to be $250,000/coin by 2022),
this is not the "price goal", it was one of the many speculation of what the price may be by then.
but the goal that it would be a legitimate alternative to inflationary government fiat currencies.
if by "legitimate" you mean something that the government approves then you are wrong this is not the bitcoin goal either.
Where Bitcoin goes, so does the rest of the cryptocurrencies. There's even somewhat of a dismissive attitude toward other crytpos in some investment circles;
there is a simple explanation for it, people don't care about altcoins!
depending on what goal was set. But if it is its effectivity and reliability as a crypto currency, most probably it has reached an extremely high goal compared to other crypto.