That's the first thing that comes up every time VMs are mentioned. It's definitely not false, but I feelel that some points should be mentioned:
1. Over all VMs are a lot safer than bicycles: 1.1. If a car touches your bicycles handbar you've lost. In a VM the handlebar is inside. 1.2. You ride feet first which increases the length of your "crumble zone" significantly. Watch this and tell me you would have survived in a normal bicycle: https://youtu.be/5aujzL__SZE
2. Huge trucks are not as common in Europe. Everybody here is worried about SUVs getting too big here, but our SUVs are tiny compared to (some) American trucks.
3. Due to the E-Bike boom, cycling infrastructure is becoming a lot better with huge stretches of smooth, paved bicycle lanes along major roads. We are getting there.
4. Some sports cars are only slightly heigher compared to Velomobiles (e.g. Mango: 0.9m vs. Porsche 911 1.2m) and are often painted super bright colors. If a driver overlooks a VM he will probably also overlook a sports car.
(To be fair, I think that there is some "this object does not participate in traffic" recognition happening in the brain that just marks VMs as unimportant. I did a test drive some time ago were we were shouted at because we "drove towards [the other guy] at high velocity" ... while we were literally waiting to pass a parked car. I assume that we just "appeared" for him and his brain decided that therefore we must have been moving at high velocity.)