Earlier quoted context omitted.
I'm also a big fan of not deleting data. I don't like squashing commits, for example. But I also want to be able to see high-level intent. If instead of "squashing", it were "grouping", I'd be happy. I could encapsulate a bunch of messy commits that I made while I didn't know what I was trying to do. The intent would be clear at a higher level, but if you want to dig in to see what it actually took me to achieve that…
How often dou you actually look at this historic detail you seek to maintain? Daily, weekly, monthly? Is it more for to satisfy a feeling than an actual need? I mean if some junior dev wallows on some branch for 40 commits, I don’t want to see any of that, I just want to see what was finally merged.
These points usually indicate communication/comprehension errors involving two developers. When I bring the problem to the developers' attention, their reactions differ based on their commit style. If they have atomic commits it's usually a five minute conversation because the nature of the problem is immediately apparent. If they have large squashed commits, I usually have to bring both developers together and have them fight over whose problem it is.
So I would say... a couple times a week, but the overall time savings of finer granularity is significant because it limits the number of parties that end up huddled around a single screen.