Pretty much, yeah. Also remember, spells do what they say they do; even if a Wall of Force was microns thick doesn't automatically turn it into a blade. That'd be a DM ruling if anything.
That's why it confused me, I mean, look at the Shield spell; "An invisible barrier of magical force appears and protects you". Nothing is said about it's thickness or appearance beyond "you get a force field". It can't be destroyed by an means short Dispel Magic; in theory a 100 goblins could shoot at you and if they fail to hit, the shield deflects them all.
I don't mind attempts to add some verisimilitude to spells, but I often see arguments in other threads that adding anything to a spell, even if it makes sense (like say, making people take damage for walking through a Flaming Sphere on their turns), is making spells more powerful than they were intended to be.
So a ruling like "running into a Wall of Force edge-on will do damage instead of merely halting movement" seems a bit inconsistent when people are so adamant about the spell doing precisely what it says it does and nothing more in other respects.