The reverse can also be true, I've done 2x10km commutes for much of my adult working life and even if you wanted to push it to the point of sweating and having to take a shower, traffic usually foils the plan so you're confined to a more or less leisurely pace (ofc this can be 13 km/h or 22 km/h) and yet... I don't think it helped me a lot. It's just not a lot of "exercise", even if it's 10x30min per week.