I see the exhibition category not as example for the other categories where people come with a question and want it to be answered in a shorter time period.
Regarding exhibition category:
If someone could at least explain in the sticky post of exhibition
https://forum.arduino.cc/t/about-the-exhibition-gallery-category/847485 if comments on others show offs are wanted (I guess so) and if yes, what's the procedure to reopen a thread.