But there's no valid decision a consumer could make with a GMO label
You still don't get it. Consumer decisions don't need to be based on "valid information", they just need to be based on true information. It why someone picks a Chevy over a Ford or Kleenex tissue over Puffs. It's preference. If you're selling a product, you don't get to decide for your customers. They get to decide based on whatever criteria they choose. If they think the Kleenex label is better for their needs than a Puffs label, then the only thing that matters is that when they order Kleenex, they get Kleenex and not Puffs. Because they're the ones paying.
If I decide to buy a product made locally instead of a nearly identical one made somewhere else, there might be a whole host of reasons for that decision. But what can't happen in a "free market" is for something to be sold as made in Chicago when it's really made in Dallas, just because the producer believes that the Dallas product is just as good as the one made in Chicago.
It's not GMO-free food (or I guess food with GMOs) that people want, it's the labeling. Since consumers can see what foods are labeled with, they have the information to make a buying decision.
Now you've appointed yourself the person who decides what people want?
We're done here. You don't believe in "free markets" or in people's ability to have agency over the way they spend their money. You've become such a zealot for GMOs that you're prepared to take away that agency in the name of...something.
I cannot have a meaningful discussion with someone who believes people must not have certain information because you don't believe they "need" it. That's not "pro-Science", that's anti-Science.