Maybe the fact that both Mac Pro 2013 and Mac Pro 2019 have fans going on all the time (they may be quieter at idle, though) should give you the hint about my boldness
It's not about the fan noise, though. I think most people here can live with a faint fan noise. The problem is the high-frequency "whine" that some units have. People initially thought that was fan noise, too, but as it turns out, it's more likely to be coil whine related to the PSU. This is what people actually complain about.
If that's actually how Apple designed it - which I doubt - then that's just terrible, inexcusably bad design.
The point was, though, neither you nor I know. You might think you know, but you absolutely and 100% don't.