It would be the wrong board but still the individuals there should not say
Challenging your "shoulds" here.
Why is it not okay for people to lay boundaries? This place is for this.
Why is it not okay for people to have different opinions than you?
Telling someone they're in the wrong place may be hurtful (or may not)... But it is necessary. It may be an honest mistake / correcting ignorance. It may be deliberately refusing to respect other people's boundaries. Or a whole lot of other reasons.
People on this board are generally either kind, or factual, when people wander in here by mistake. It's usually only after deliberate disrespect, willful ignorance, or outright attacks that people get pissed. Although I think the reaction is fair at any point. I'd be pissed if someone started doing a strip tease at my son's school, regardless of their motivations or behaviors when asked to leave. (Not the time or place for that! Respect. Boundaries. This is a school! Not a strip club!) For other things, I tend to be pretty relaxed, until they throw a fit upon being asked to leave. But just because I'm relaxed about it, doesn't take away others right to their reactions at feeling invaded/insulted.
I'm a bit of a rule-breaker by nature. I push boundaries. I'm often the one who
is doing things differently. But my feelings, just because Im the one breaking the rules aren't more valid than the people I'm walking over. I'm not "owed", don't have a "right" to bust through other people's boundaries. The idea that they "should" either ignore their own boundaries, or "should" treat me in a certain way once I've completely disrespected those boundaries (accidentally or on purpose), or "should" only say XYZ... Is a bit concerning to me.
Not all boundaries are kosher, I'll be the first to admit that. And I'll fight ones I believe to be unjust. But just because a boundary exists doesn't make it unjust, ya know?