It adds a huge amount of complexity on all layers.
Discussion
Could you give one example
I not have much knowledge on cryptography, but from my understand. If you main key is A, you created some delegated keys X, Y and Z, then you published some notes which each keys.
When other users want to find your notes, they need to get its from all pubkeys of A, X, Y, Z 🤔
He would agree.
