For completeness, there's a related argument as to why you'd want to sell a call option with a strike price that looks a long way from the current price (an out of the money option in the jargon).

If you already own bitcoin with the price at 20k, you can sell the call option with the strike at 50k. You will immediately be given the premium. Now, if the price < 50k when the option expires you've made more money (the premium) than you would have done otherwise.

If it does expire above 50k, you can sell your bitcoin and give (current price - 50k). As such, you don't lose money but you don't gain as much as you would if you hadn't written the option.

This is called selling a covered call and is very common in the stock market. If you don't own the underlying asset i.e. enough bitcoin, this is called selling a naked option and is quite risky as you're exposed to the price going very high.