It seemed to decrease the number of exploding meth labs in the country: https://www.statista.com/statistics/942043/laboratory-incide...

That seems to track pretty well with the rise of P2P meth. It's unlikely many people would return to setting up small labs using pseudoephedrine because large scale operations using P2P have driven the price down to the point that it wouldn't be profitable.

There might be an increase in people making tiny batches for personal use if pseudoephedrine became easier to get, but nothing on the scale of 20 years ago.

What is P2P meth? I always think peer to peer.

P2P is phenyl-2-propanone, an ingredient in some methods of synthesizing methamphetamine. In supply chain terms, it is much harder to restrict than the previously-popular ephedrine and pseudoephedrine because it can be synthesized from many common chemicals.