No, they haven't. You never make a profit until you sell. And since we're on a Bitcoin forum, I think we should think less about what you've gained in fiat terms, and more about what you've protected yourself from fiat depreciation by purchasing
Bitcoin investors do care about bitcoin value in fiat. If not, in the crypto market, we would have not had BTC/ fiat trading pairs.
The difference between true bitcoiners and bitcoin speculators are
- Bitcoiners buy to invest, hold and sell to take profits BUT they will take any good opportunity to reinvest in bitcoin. They intend to increase the bitcoin they own.
- Bitcoin speculators only want to make profits in fiats. They invest in bitcoin as they believe bitcoin can give them good chance to get profit. That's it. They don't care about the blockchain technology, the evolution triggers by bitcoin, or don't solidly believe in bitcoin.
Two types of people care about fiat for their whole lifespan (bitcoin speculators) or at some period in their lifespan (bitcoiners)