Finite - Yes, there is a limited supply of Bitcoin and this cannot be altered.
Scarce - Again, there is a fixed supply unlike FIAT which can be printed to an unlimited supply.
Fork - Forks are not Bitcoin. They are shitcoins like Bitcoin Cash and Bitcoin SV. Not the same.
Replaced by a superior product - Unlikely as Bitcoin code can be altered to match and it has first mover advantage.
Bitcoin is obviously not worthless as people are willing to pay 12K USD for it.