Pro-bono work is generally done on the clock. Open source work (where I've worked at least) is expected during personal time. That's the major difference from my experience.
In some ways, that mindset comes from a place of privilege. In true poverty-esque situations, you often couldn't get the time off of work to find another job, or even afford the transition between one job and another. It can be a pretty vicious cycle.
1. Is most certainly true. Everything you type needs to be entered, and your browser probably has undo/repeat, which means a stack of your text is available too, it's still an application at the end of the day
the most important piece of jira for us is the API. How/When do you plan to have an open api that will assist in navigating issues through webhooks? (i didn't see it listed anywhere if you already do)
I suggest downloading MyFitnessPal and just learning what different amounts of food look like calorie wise, then you can eat whatever you want as long as it's within your caloric goals.