You're kinda right.

Our car (2025 Ioniq 5) gets about 3-4 miles of range per hour on a 120V outlet. If you're home for 10 hours overnight, that's at least 30 miles of range each day. Some random article I found[1] suggests the average commute is about 42 miles. So if you include some extra time on weekends, a 120V outlet easily matches the average commute distance. If you drive less than that, or are home more often due to WFH or whatever, then a 120V outlet is definitely enough.

In reality, probably people drive significantly more than that, eg for shopping and seeing friends and shuttling kids around and whatever. So in the end I do agree with you, lots of people will want to get a 240 line to their garage. But an existing 120V line is probably genuinely enough for a whole lot of people, too. It is for my wife & me.

[1] https://www.axios.com/2024/03/24/average-commute-distance-us...