I have the same issue, and I'm kind of glad I'm not the only one.
Both the water and oil temp gauges read low, and with the water sitting just over 70c most of the time.
The thermostat is new (and not a cheap one), the bottom radiator hose stays cold until ~70c on the dash gauge (so thermostat is not stuck open), then the fans come on at ~82c (which I assume would be 95ish on a properly working gauge?).
Gauge repair is way down the list, after fixing the oil leak from the filter housing, the leaking cam cover gasket (including cracked corner mount), the CHOD, the seeping heater matrix seals etc etc!