Don’t wait for me to do it; you can steelman too: It’s plausible that the consequences of an actively wrong implementation would be more costly than this delay.

Don’t wait for me to do it; you can steelman too: It’s plausible that the consequences of an actively wrong implementation would be more costly than this delay. Instead of just throwing costs at each other, you could acknowledge the other party’s and then argue that yours are greater. (I personally would agree with you about this.)