I think it’s not obvious in this case what is better, though I think I mildly prefer publicly. Sending it privately keeps the conversation less tense and has less risk of making people feel embarrassed, but sending it publicly is better for helping newcomers orient to the culture (99% of people never post or comment, so private norm enforcement is a losing battle, especially if you hope that EA Forum norms expand to the in-person realm).
I think it’s not obvious in this case what is better, though I think I mildly prefer publicly. Sending it privately keeps the conversation less tense and has less risk of making people feel embarrassed, but sending it publicly is better for helping newcomers orient to the culture (99% of people never post or comment, so private norm enforcement is a losing battle, especially if you hope that EA Forum norms expand to the in-person realm).