There is another type of "Preconditioning" you can do, prior to driving in the morning. Basically, by setting a departure time, and flicking the Precondition switch in the app, your car will be warmed up when you plan to leave.
If it's really cold outside, the car will preheat the battery as well, and show some red heating strips by the % SOC in the app.
Yeah, even if you never did this so far, you haven't hurt anything. The car might not have full power or regen braking for part of your drive if starting out cold, no big deal.
I've really loved having a toasty warm car every morning. Almost makes living in a cold winter climate OK for this California native.