Ehm, I also had talked with the dev, already when the patreon problem appeared, well before he implemented it.
If you look back, you will see n replies from me about this referring to the position of Zorlun, and with his "like" to confirm.
So, if with patch you mean something distributed, negative.
Unless he changed his opinion, he does not mind someone like me doing the modifications on their hard drive, but he does not want anybody to make a patch that would then be distributed, to avoid the risk of having a parallel game (he needs to live off the game) - Prometheus is the only exception, passing through him.
Anyway, it is my fault for touching the subject in a public post, I should have contacted him directly to explan exactly what I had in mind.
Happy new year !!