I have deep aversion to "Open source projects should run office hours" title. Maybe "Office hours may be a good idea for open source projects"? This would not suggest obligation. In general, fact that someone created or maintains or supports open source projects should not be considered to create any obligations beyond lack of malice and abuse. I am not obligated to support any bugs, create any features and it is per…
It seems pretty obvious that the author doesn't intend to coerce anyone into doing anything.