As Ansari has kindly pointed out, Abdullah took a course of action many users can do, which is to submit a suggested edit. All users on our sites are moderators, through flagging, editing, commenting, and even answering better than previous answers.
As for the second, my research has indicated to me two things. First, this is not a term these users would choose for themselves. For example, I could refer to a man as
male, or I could refer to him as
Y chromosome. While all three are technically correct, many men of my acquaintance would genuinely dislike if I referred to them as
Y chromosome in my day-to-day conversation. In the same vein, while the term wahhabi may not be incorrect -- and may even be technically correct for a number of people who follow this path -- it is not one they like. Part of respecting others means respecting their wishes with respect to labels. You are Ahmadi and not
User67 (though both are technically correct), so I respect you by calling you by the display name you choose for yourself:
Second, you are correct. There are many teachings and subgroups within Sunni Islam. As such, I suggest you say, instead of wahhabism, perhaps the followers of the teaching of Muhammaad ibn Abd al-Wahhab, though longer, would prove less incendiary overall. You could even choose to be more vague: "Some schools of Sunni scholarship believe..." would serve your purpose without explicitly calling out any single group of people in an offensive way.