More accurate of what exactly?
Gallons is an apples to apples (great card game BTW) measurement you can compare across zones if they’re setup well and a flow sensor is in place. I fully appreciate the fact that V2 had shortcomings on how to properly measure gallons which were not easy to overcome.
Minutes as a primary report axis don’t seem to provide the same insight as gallons. Happy to be wrong, but here’s what I see happening with this change. You may be able to compare a single zone to itself over time. It wouldn’t be useful to stitch all of the individual zone comparisons into one parent “minutes saved” report as each zone may have different head counts, flow rates, etc… which makes a minute of watering in each zone a completely different unit of measurement. Were the minutes saved on 6 head zones, 3 head zones, an emitter zone, etc.?
A single zone run twice for the same period of time may also be different units of measurement given water pressure is not always a perfect constant.
March 15th two zones are watered starting at 5AM. Zone 5 and Zone 9 are watered for seven minutes each as the moisture levels were still adequate in all other zones. Let’s say the system was able to keep 40psi to the rotary heads during this time.
March 20th eight zones are watered starting at 5AM. Zones 1-8 are watered for seven minutes each. Sometime during Zone 4 you may deplete the home’s water pressure tank due to running the well too long without a delay to recharge the pressure tank. You’re still getting water, but not necessarily at the same pressure as you were for Zones 1-3. Maybe the last half of Zone 4 through 8 is only able to get 25psi. Your minute readings of Zones 4-8 are now entirely different animals from what they’d be if the pressure wasn’t impacted.
Cookbooks do not read “Fill a measuring cup with water. Tip over for 3 seconds.” The result of those seconds may be wildly different depending on the angle the reader tipped the cup or the mouth on the cup.
Gas stations do not charge based on the number of seconds you had the pump trigger pulled. The flow rates vary if you have the trigger pulled in a little or a lot, or if one or twelve people are pumping from the same storage tank at the same time.
I’m totally happy to be told I’m a moron and <$REASON> is why minutes are accurate to use rather than gallons for a product which is primarily responsible for moving fluid through pipes.
Without further explanation (that URL states nothing behind the actual reasoning) this change feels more like a decision was made to give up putting additional resources into getting gallons accurate and go with minutes as a cheaper method. It is probably an easier stat to report on, but in my mind not a reliable unit of measure on its own. Hopefully there is more work being done to improve the capabilities around measuring & reporting of gallons, and that will come back to the forefront in a future update.