My build started on September 19th, isn't ready yet, Adrien didn't say anything so far and I am not worried at all.
Truth be told, I did ask for two major changes in the middle of the build! One in the first month of the build and another one in the second. On the two occasions Adrian answered in the same day and said "no problem". It wasn't minor things, it was major changes. One was to go back from 24 to 21 frets and the second one was to put dark fretlines when I said I didn't want any. He is there, don't worry.
What I am going to say next is not to be misinterpreted. Please, this is not prejudice, it's just how things are.
I think you are forgetting (specially the americans) that you are talking to an European, particularly to a Pole. Eastern Europe countries are tipically less "open" when it comes to personality. Europeans are very different from Americans, and in Europe there are big personality diferences. Those answers that Adrien gives, the "Ok", the "No problem", etc., doesn't surprise me at all. Poland, Ukraine, Russia, Bulgaria, Romania, etc.. If you talk to a guy from Italy, Spain, Portugal, Greece, France, it's completely different. Not better or worse, just different.
Americans are a lot more extrovert, not like here in Europe.