I agree.
Yes, it would be nice if it was more elaborate. Also, it looks like for all players the "total_attempts" are three more than the "score". There seems to be a bug here.
EG:
In:
https://api.chess.com/pub/player/dimpoul/stats
Look at:
"puzzle_rush":{"best":{"total_attempts":28,"score":25}}}
I have noticed that stats contain best rush score and attempts through all 3 versions 3min/5min/survival - it would be nice to provide them separately