@DC, those who desire the power are usually least qualified to have it. I agree, we should think before we post, but everyone is human, and occasionally has a slip of the keyboard :p. We can never know what is going on in someone else's personal life, so we cannot know when we will accidentally insult someone without meaning to. At that time, it is best for the poster involved to apologize, and for the other to understand that it almost certainly wasn't intentional. Those who are clearly showing a track record of insulting other posters are dealt with, first by warning, and then further consequences as necessary.
I'm curious, @DC, why do you think people are trying to obtain positions of power? I can't think of anyone who is trying to curry favor by sucking up to the leaders on the forum.
Especially, we need to remember that while most of us are native English speakers, there are still quite a few who are not, and we need to show them extra courtesy, when they are struggling to communicate. Likewise, when we don't understand, please understand it is hard to communicate across the language-barrier. Sometimes they are using Google Translate from their own language, and it - as we know - isn't perfect, and so things may be lost or confused in translation.
As to the admins/mods, please further explain what you mean, because I don't think that any of those people holds that view, some (such as @Pitcher@ASUS), are not native English speakers, and so miscommunicate on a regular basis. We know that everyone on here is a live person, and is deserving of respect, and we always try to give it. Some people know more, and some know less, and often those who know more can forget what it is like to know less. In that event, they are not trying to put down those who know less, but simply forgot. It's part of life, since we all make mistakes.
To be honest, if we are willing to learn from our mistakes, then that's the important part.
ROG on, as @chrsplmr would say.