I haven't noticed any increase but unless they are bad you will not notice. The actual good ones will end up in slabs and collections to never be known as counterfeits. As far as fairly good but just not good enough a ton came out of Canada in the 90s that someone used the correct stock and a real printing press but didn't clean up the pics before rescreening them. Then a few years ago a ton of modern "factory" autographed cards came out of the New Jersey area. Those got noticed at first because of the bad autos on them and not the actual counterfeit cards.
In all honestly it amazes me beyond belief baseball cards have any value because they are just a very simple picture on one side and some even simpler printing on the back. I know many on here say I could tell and all I can say is just keep telling yourself that. In reality people counterfeit way harder things fairly regularly and more will get to baseball cards at some point. Here is a PBS documentary on how people have counterfeited entire ancient books that have fooled experts.
https://www.livescience.com/65847-ga...ook-fraud.html