Earlier quoted context omitted.
I've found I'm exceptional in being at all concerned about privacy. I think that if you asked, most people would only want minimal effort put towards confidentiality, especially since the trade-off is that other researchers won't be able to double check the analysis.
I've worked as a journalist in which my (and many other data journalists') modus operandi was to publish the data. Often because the data was public record anyway. I now work in academia and the mentality is significantly different. Some of it is logistics -- I would say most traditional news organizations do not have the internal incentive or habit to figure out a way to publish data. Whereas with newer organization…
The strictness varies by university. Ultimately the IRB is there to ensure safety of the participants and minimize the chance of negative consequences. A couple examples I've heard from around my university include...
A study was taking place outside. There was a chance of a bee sting occurring to the participant. The IRB required that the researcher have an epi-pen ready just in case along with any required training.
A paper used in a study had the wrong stamp on it (not the most recent IRB stamp). The document had not changed from the last time, but the rule was simple. Every document presented to the participant had to have the most recent stamp.
On a study in which it was expected that 1/2 of the participants would feel nauseous, they had to provide a place to sit, water, and small snacks.
And perhaps most importantly, you can quit any study you're participating in at any time, for any reason. Compensation is figured out ahead of time, and you're going to get lots of questions from IRB if you want to do anything to reduce the compensation for leaving part way through the experiment.