If you were OK with Vader caps and the selling of them then you should be OK with what the counterfeiters are doing.
Different things going on...
There's;
1. What these (& other) derps did (in regards to 'scull' caps); created a 'duplicate' mold
USING the genuine, related product. Result being a
near-exact copy of an identical product (keycap), & even an attempt at color copy. Copying, producing, and selling the 'identical' character/product (CF Skull/keycap) which already exists. Replacing the original artists/company's signature with their own.
2. What Bro Bot did (in regards to BroBot V1); created a mold by re-purposing a completely unrelated* product with minimal sculpting of their own. A toy/figurine re-purposed to create a model, which was used to create the mold, used to create keycaps, a completely unrelated* product to the original toy/figurine. A character/product that did not previously exist in keycap form.
3. What ClackFactory did (in regards to Vader);
POSSIBLY SAME AS #2 ABOVE OR, created a mold using an original hand sculpted model, HEAVILY influenced by a completely unrelated* product/character. A character/product that did not previously exist in keycap form.
*unrelated to keyboardsOf course this is my own interpretation & thoughts on postings I've seen on this forum. Things get even more cloudy if you bring other things into it.