@Gee_Whiz, some additional comments:
Traditional cyclists have somewhat easier life, as they can use double- or triple chainrings. A roadie uses a huge 50T chainring on the flat or downhill, and, e.g., a 36T chainring uphill. We cannot do it with most of mid-drive e-bikes as we are bound to 1x drive-train.
Therefore, there's a lot to think of and decide. For instance, I'm pretty happy with the 44T chainring on my Vado SL as I ride it in a flat area, with overpasses being the most significant climbs here in Central Mazovia, Poland. Oh, no. There is ONE significant hill here with 10% grade: I really struggled to climb it in SL Turbo Mode and 44-36T gearing
Using my full power Vado, I can use anything from 42T to 48T for chainring in my area. I prefer the 42T as it gives me a good climbing capability (these overpasses!), great acceleration, and max assisted speed of 45 km/h (28 mph) at high but manageable cadence.
However, mountain rides with even 19% grade climbs called for the full power Vado with the chainring reduced to 38T. On such trips, I was either climbing or coasting downhill -- nothing in between really
Replacing a chainring is easy if you have done it at least once but I would not do it everyday