If people insist on a "Made by <name>" footnote, then I agree with keeping it as discreet as possible, but I don't think it's really needed at all.
It sounds like a great idea to expand on this feature, seen this on other servers and it seemed to be a success there as well.
You can't edit the stats or qualities of the item, so the worst that can happen is an item with a poorly written description. Easy to ignore.
I think this can create a ton of RP opportunity. And players that "godmode on their biographies" should never be seen as the norm.
(Besides, that is also a differen matter entirely. People can write "LOL" with built campfires, doesn't mean that is a bad server feature either.)