True. However, as most stirrers may not scrape from the surface of the pot as there's usually a millimetre or so gap , if there is a hot spot, it could scorch. I found that my pots , after years of use have evidence of hot zones and if I do not work that particular spot when reaching temp, it does scorch and results with burnt flaky bits.
It's a double edge sword IMO
I am thinking of spending $ on a set of larger presto pots and converting with PID's with taps to drain out a quart at a time. But ultimately , I would love to have a heat exchanger unit/ pump designed to constantly feed my hotrunner machine or have an heat exchange/ injection unit designed for a series of multi cav hobby molds and move away from the hotrunner and microwaves all together