My daily commute takes me from sea level (well, 1 meter above) to 66 meters above sea level. It's not uncommon that I have obligations at around 79 meters above sea level. Both of those climbs are single hills that don't let up, and are on major commuting routes in my city - a city in which biking is almost at an Amsterdam-level of bike usage.
Sure, it's tougher than a flat road. But if you're in any kind of shape it shouldn't take too big of a toll out of you. During lockdown I spent months without going on that commute, and without keeping myself in shape by other means, and when starting back up again I didn't miss a beat.
A small hill (which I consider ~60-80 meter differences) shouldn't scare people much.
EDIT: I should also add that I ride on a heavy mountain bike. The intention was to use it as a commuter and to ride trails, but it's almost exclusively been used as a commuter.