Well, there goes that theory. You are right, a storage system shouldn't corrupt data.
However, it's not the software primarily, it's some interaction between the software and a subset of hardware, or some combination of software and settings, or hardware and settings, that is the issue. Not everyone has the problem, so it's difficult to pin down what exactly is the issue.
Earlier in the thread the developers asked for a way to duplicate the issue, but what was put forward doesn't duplicate it on all systems, so isn't especially helpful. I personally have 4 running unraid servers, all on 6.7.0, all with different hardware configurations, none of them have the issue.
Without a way to trigger the issue predictably, isolating the cause is very difficult.