Overall, Bitcoin halvings are a mixed bag. They can have positive and negative effects on the price of Bitcoin, and they can also make it harder or easier to mine Bitcoin. It's important to weigh the pros and cons carefully before making any investment decisions.
CZ's tweet is just his opinion, and there is no guarantee that Bitcoin prices will rise in the year after a halving. Investors should always do their own research before making any investment decisions.
DYOR