You can't win in these discussions. Some people are more relaxed in certain situations than others. As I said in my earlier post, it's really up to the parent to decide based on their child and their first-hand assessment of the situation.
If you say you like to let your kids run free because you believe it teaches independence and resilience you're told off for being smug. If you say you prefer to stick close to your child you're told you're an inexperienced mother and stifling your child. Can't win.
If someone posts something about what they saw at the park, they are clearly having a reaction to what they saw and making some sort of judgement about it. So if you put it out there, you'll get varying opinions. Then people get over-sensitive about opposing viewpoints and take it personally. Can't win!
While everyone should try to be respectful in their posts, others should be reasonable in their reactions. It's only a p!ssing contest if you participate in it.