This is an interesting idea, but it could quickly be adapted into a kind of industry best practice in the same way that many exchanges are using Chainalysis to screen incoming onchain transactions.

Lets say this gets built and Chainalysis offers up a free service that you can point to in order to freeze lightning payments on a best effort based on payment hashes of transactions made by suspecious people. Now every regulated wallet provider or exchange would be pressured into using such a service.