I think most of us are in agreement that there are plenty of cases on Reset where people are far too quick to try and backfire a thread, go for those 'gotcha' moments, or generally post blunt feedback that is in no way constructive. However, I do not agree that this is as widespread a problem as you are making out, and I also do not think all of your examples fit into this bracket.
If someone creates a personal thread and is seeking feedback, there has to be a level of expectation that they might get responses they did not expect or particularly want to hear. There's nothing wrong with challenging someone, especially if it's done with good intent and it's constructive. Sometimes people do need to have their opinions challenged, and I think this kind of feedback is a vital in developing yourself. Part of maturity is being challenged, accepting you're wrong on certain opinions, learning, evolving... a good teacher will challenge your opinions as you grow up, your friends and family should call you out on your bullshit when needed, and people on this forum should be able to respond and tell you things you might not want to hear. You might not always agree and the people giving the feedback might be wrong, but people aren't going to change for the better if they're never challenged.
The opening the door for someone thread is a perfect example. To me that person should have their opinion challenged and critiqued. That person needs to realise that their perspective is completely skewed there. They are clearly in the wrong and should not expect the rest of the world to bend to their will. What would help them the most is to take that feedback on board, reflect and realise that's a problem with them and nobody else and it's an issue they should work on. If I complained to my friends about someone opening a door for me, they'd rightly tease me and point out how ridiculous I was being and thank god for that.
Comments that are bigoted, racist, anti-LGBT, hateful, etc. should be dealt with decisively and without remorse, but I think when it comes to someone feeling insulted or slighted by feedback on other issues it's less clear-cut. There has to be an allowance for a certain level of discussion and I don't see how you could ever draw up a definitive list of guidelines/rules for what constitutes 'acceptable' feedback. If it's not always clear what is constructive and what is not and, if a new policy is implemented, there's going to be inconsistent modding and bans and it's going to create an atmosphere that could prejudice open discussion.
If you get upset or anxious when someone suggests that updating your profile picture or that going to the gym could help your self-esteem/dating success then I personally think you might have some issues you need to sort through. Like most of us do I might add. I'm not even saying that you should necessarily agree with the feedback or take the advice on board, just that being challenged that way should not be causing you anxiety.
There's a guy I work with who has severe anxiety and other mental health issues. We work in a huge office with people constantly on phones, having work discussions, general chatter and so on and some people are obviously louder than others. The noise often causes this guy anxiety to the point where he has to quickly walk away into a quiet room. To deal with this my boss first allowed him to listen to music at his desk, which helped for a while but then lost its effect, then he let him work from home one day a week which again helped for a while, until eventually he increased this to two days a week. Now he spends three days in the office with his headphones in constantly and he's more affected by noise than he's ever been. He cannot handle it, makes passive aggressive comments to people talking, puts in complaints and causes issues all the time. This is because he's never been forced to confront the problem. The problem is not the noise as a busy office is invariably going to be somewhat noisy, the problem is how the noise affects him. Confronting his own issues is the only way he could actually solve the problem, or the other extreme is finding another work environment he's more suited to. Instead of my boss trying to get him to confront the problem, he's enabled him with bandaid fixes that have exacerbated the entire issue and created a bigger problem.
What I'm trying to say is it's easier to work on yourself and how you perceive people, opinions and the world than it is to hope the whole world changes for you. When people undertake Cognitive Behavioural Therapy about their anxiety, they are asked to confront the things that make them anxious, not shy away from them. Exposure to critique and feedback is helpful if you go in with the right mindset.
