Yeah the ones that he posted are all fakes. The majority are ROC medals or badges and none would be hanging off a the Communist style ribbons nor made from the same colored light brownish material.
There are some out there that have the Communist style ribbons as you said with the red ribbon with yellow stripes and thin hangers are real. They have baked on glass enamel in most cases. Some are very common and are more available than others. Of course they don't go for a few dollars. Hard to find ones do go for $150 or more and the common ones much less. For the actual prices, I would need to visit some Chinese auction or dealer sites.
If you mean the ones with just red ribbons with the ugly looking thicker hangers then yes those are the "fake" ones. They have painted enamel in most cases. I guess if they were called "restrikes" maybe it would be ok, but they aren't near the quality and have different inscriptions in some cases. For the most part, most collectors have called them "fakes."
The original issues that I have. These are the common ones out there, not $100+ rares, wished I have a few examples, but they are too costly as CCP medals are not my big focus.