Let's not assume software is always correct ( especially if guidance that came out on 25 March is not necessarily incorporated.  It still keeps coming back to the use of the word "you" by the IRS and even in the question on the RRC worksheet. Following the RRC worksheet and if you take "you" literally as the client in 2021, the 2021 non-dependent client would be eligible for RRC in 2021 because "you" is taken as only the parent receiving the  $1400 on behalf of the kid. ( and who received the 6475 letter).

Prudence to me comes down to alerting the client that if they choose to claim the RRC, it is clearly ambiguous with the FAQ's and if they do receive RRC in their 2021 filing , there's a possibility that they OR their parents could receive a demand for payback when the IRS figures out what they want to do with the ambiguity they created..