When filling out an event in Google or Apple calendars, the location of the event autofills into the calendar events. that is an extremely convenient and valuable feature especially when the calendar syncs to a car and the location then autosyncs to the car GPS navigation. The similar “location” line in events for Proton does absolutely nothing at all and is entirely pointless as-is. But for this single omission is the only reason I never use Proton Calendar.