I have heard this. I don't think its new. In discussing the blood doctrine for example, on several occasions I have been asked, "Do you think you're smarter than these brothers?".
In other words, because they are impressed, they could not even see the possibility of the GB or branch being wrong, and you being right.
I tried a few different responses but none of them worked out well. I pulled out the scripture that says Jesus chose the simple things of the world to put the others to shame......I forgot the exact rendering. I tried asking how they knew how smart these people were or were not.
Its just a submission thing. Yes its a nice app. There are lots of nice apps. The GB did not build those apps. What does their intelligence relative to anyone else have to do with anything?