For my commute, which pre-Covid was the same route every day, I did not make use of the navigation capabilities of my current Garmin 1030. Before this I used a Garmin 1000 or 520 (and a Polar v650, but won’t even get into the pos that it is) for several years. The Garmin models have yet to lose sensor signals (speed, cadence, and Garmin/Polar/Wahoo HRM straps), save for when batteries need replacement. Now that I have the chance for less commuting (the MUP I relied on is now dangerously crowded in the afternoon), I am using the GPS for recreational rides.

All of this is a long winded way of saying to consider a good GPS capable head unit, be it Garmin, Wahoo or other (save for Polar...) and ignore the GPS functions. They make solid units that function great without use of the GPS. And if your needs change, the GPS is there.