This year's RMD is based on *last* year's value on December 31, 2021. For mosts, their investments were worth a lot more than they are now. If you are still waiting to take an RMD in 2022, you get to lock in the loss of value since that date.
Yeah, should have said “tax break for next year” since 2023 RMDs will be based on the value at this year’s end.