I agree that not everything from china is fake (I mean, after all pretty much everything is from china)... but at the same time I also agree that the chance to get a fake is definitely higher from chinese sellers :p
yes, a lot of local sellers get their inventory from china... but they usually already check for fakes if they are actually legit sellers, and/or they picture exactly what they're selling, so you know it's fake before you buy.
idk what your experience is, but I have got plenty of fakes from china, sometimes functional, sometimes functional but a vastly inferior product and sometimes not even functional, and in 90% of those cases what was pictured was not what I got (sometimes you know you will get a knock off purely based on price)
that does not mean that there's no sellers selling fakes here, there's plenty on amazon alone (but most of them are actually china based).
a few recent examples...
remarked chips... I mean if they work... technically not a fake as such, I'd still prefer them not do that.
copied product from another chinese company with vastly inferior quality, missing heatsinks on chips that definitely need them... so while it works at first (I mean they just copied it after all), it won't for long if you don't fix that yourself.
keyboard dampening rings that weren't at all what was pictured but just simple rubber o-rings instead
there's a few more, but in most cases I knew before what I was buying, a lot of soldering equipment...