You should stop. The wikimedia foundation has all the money it needs to fund wikipedia perpetually. The endowment was met years and years ago. Your money is being spent on parasitic non-profit management class nonsense things.
https://en.m.wikipedia.org/wiki/User:Guy_Macon/Wikipedia_has_Cancer
I think “slur” also requires a component of direct offense for it mean anything. I don’t think it is valid to be offended for somebody else if that somebody else isn’t actually offended. If I make up a slur on the spot denigrating some aspect of your person that you do not find offensive (eg. Flumplenook - for a person who’s a bit clumsy), is it really a slur?
So if you call someone retarded, and they do not have the mental faculties to be offended, is it really a slur?
For slurs to have any meaning, any power, they need to be understood and internalized as offensive.