Wow. This is very interesting. So reading between the lines here we have some regulations in Ontario that restrict the discharge of salt water into the sewer system. Not sure if this is the case where I live but I’m not too far from Toronto so could be the case.
So Hayward has made the “low salt generator” model that operates with low salt ppm to get around this, but it will only work for smaller pools (obviously). but....it’s not really low salt, just says low salt on the box.

. I feel like a huge mystery has been solved here. I’m going to add a bit more salt to my pool to just see how things go. Maybe to about 1900 to see if things are still generating and if it does trigger it to stop I can drain a bit out back to 1800.