I do feel uneasy but this is tempered by the excruciating price of the original in this case. At least it's not going take sales from AN Japan. The board originates from a part of the world with a different attitude to IPR. Morally yes I'm conflicted but I'm interested too...and as has been said a real M77 will no doubt sound different. If I'm going to expend moral outrage I suppose I'll reserve it for climate change, plastic, even Brexit (all conversations have to come back to this nowadays).
I suppose I'm 25% uneasy, 75% interested.