"I am not understanding why we have to enter another 1099R"

People are using that to get the projection of the tax to the 1040. You won't be entering it as a 1099-R for 2021, for real. I would expect it to show in the worksheet, though.

The iRS still has the form in Draft, so until the IRS releases it, there is not much anyone else can do. The -F doesn't even show in the Released list; the -B, -C and -D all have Sept 2021 updates not yet released for the tax year. People just don't notice that the other Dashes are not finalized, either. The -F is not the only form not ready.