Scenario 2 sound like it would be bad for me as well as scenario 1. I'm fairly uncomfortable talking about weight goals with most people - it feels like it would be saying I'm too fat or something negative like that, so unless they've revealed a similar problem to me I don't go there. So in that situation I'd expect to feel insulted. It's not a failure mode that I fall into any more, but where I was expecting that scenario to go is "When you read all the posts your brain goes; yeah this is too hard, I feel bad, I want chocolate. And at the end of the month you've gained a kilo."

Might be gender-related. Women experiencing that sort of discussion to go in the direction of judging appearance along with a greater negative affect from being judged unattractive. Men experiencing it being treated as just another health-related goal and being less concerned with judgment if they admit failure.

It's possible that if I did made such a post and read those responses it would go better than that, but it would be anxiety-inducing for me to go about testing that. Tentative suggestion: sharing goals I feel like I "should" be achieving is bad, sharing goals I just want to achieve is variable but expected positive.