A.) Sythe approved my name change. I didn't just randomly change it.
B.) Inventor's name change was a mere few numbers. He's donated a great deal of money to the site, for which we are thankful. It's people like him who support the site greatly, particularly in current financial 'climate', and it's not as if his name was changed in entirety or morphed absurdly.
We don't operate absolutist policies - almost no one/nowhere does. We take a relativist approach to things. Whilst we will not change the names of anyone who simply requests it, if we decide a minor name change is justifiable, it may well be conducted. There is no absolute policy against name changes. They are generally disallowed, though there are exceptions. This is pretty obvious.