Sure, but the reasons offsets are dodgy is because they actually aren't fungible in the way you're hoping for.

Say a paper maker is about to cut down a forest in the US. It buys up the rights to do so for $1M. Then, instead, it sells $1M worth of carbon credits to Amazon (maybe for a premium) for its data center greenwashing and doesn't end up cutting the US forest.

But then, secretly, or through some shell company machinery, it buys a plot of land in the Amazon and cuts trees down anyway to match its demand. Even though US law makers evaluate the counterfactual of the paper maker cutting trees down in the US, the net amount of trees in the world goes down.