The moon itself has no limit, so I dont we should have specific among price to be called the moon in any crypto not just Bitcoin, so $100k is not the moon we should be expecting Bitcoin price to be, neither $1M; what really matters is the direction of the market at that moment.
If Bitcoin's price is still under $10,000, then we can consider $100k to be the moon since the price to reach that level is above 10X; that's my own definition of the moon. Everyone has their own picture and idea of what they consider to be the moon for Bitcoin.
Now that we are just circulating around $100k of bitcoin to reach $1M dollars, it could be called moon. Each move of Bitcoin price that others consider as a pump can also be considered as a moon for others; the moon can never be reached and stopped entirely.