The whole wash was estimated 72 minutes when it started.
It weighs the clothes by inertia in the beginning, I didn’t overload, and the water (hot and cold) comes in fast through thick pipes, so there’s no excuse for this.
How dumb must the program be to estimate one minute left in the beginning of the rinse cycle with two rinses and a spin cycle to go?
The building and presumably the machine were made 2018, and the maintenance log on the side says many repairs have been made since, so the software must have been updated many times already.
This is something I always loved about macOS: the file copy dialogue was always very accurate.
Clearly you use different Macs than the ones I’m familiar with (although to be fair, it’s not as bad as it used to be). But I’ve heard them called “Apple minutes” due to the same thing.
In the 25 years of Mac OS X and macOS (and 15 years of NeXTEP/OPENSTEP before/after that, I invite you to provide any reference at all to this phenomenon you mentioned. I suggest that you can’t.