I don't see anything special here! You just created a vanity address starting with the word "dust" and a website that redirects to blockchain.com explorer. This does not solve anything at all, let alone dust issue that any user may have.
So basically you are asking people for donations!
I have done away with the private key, I suppose I could make one of those addresses that are 1xxxxxxxxxxxxxxxxxxxxxx if you know what I mean. Which makes me wonder is there a private key to those addresses? could someone get lucky and unlock those bitcoins?