embeddings come with their own spam problem 😬 and should probably be blocked by default see:
https://wikifreedia.xyz/nkbip-02%3A-challenges-and-considerations/npub1m3xdppkd0njmrqe2ma8a6ys39zvgp5k8u22mev8xsnqp4nh80srqhqa5sf

Maybe a dedicated relay/service, or pay to store the event could be  solution.