I don’t think it’s that impractical. Derpibooru has 125,000 artist tags (of which 60,000 have 1 image or less, and only about 49,000 have 3 images or more), and registering new user accounts doesn’t happen that often (once every few minutes, maybe, not constantly), so it seems completely feasible.
The question is what’s the limit on what can be claimed - if someone makes an artist tag on here starts regularly making stuff, while someone else put 5 images on derpi five years ago under the same tag, who gets to claim it? Should it be limited to “notable” people in some way, maybe artists with 100 images or more? What about people who have a reputation in the community but not much art; since this is directly intended to cannibalise the derpibooru userbase, should notable derpi users get to claim their account? E.g. would a Bexar Bandito impersonation account count as “trolling”?
