Considering that the small group of developers are all volunteers, I think you owe it to them to write your bug report in a way that is actually usable by them. One way would be creating one bigger issue with your suspected root cause (the win32 GTK theme) and a long, enumerated list of the specific issues, their reproduction, etc. (including screenshots). Ideally, each item on the list links to a new issue that follows the standard model for bug reports. Reacting as strongly as you did in the issue thread will definitely not get anything fixed.

Please consider the human and, here, the limited resources of the developers.