I'm okay with cheap/counterfeit goods for some items, if I know what I'm buying and the price reflects that. I'm not okay with paying full price and receiving a worse product than I paid for.

Examples of things I would not buy knockoff/counterfeit would be power supplies, battery packs or anything dealing line voltage due to the obvious fire hazard. Examples of things I am fine with buying off aliexpress might be flash programmers, project boxes, clothes, etc.

Also, the examples I gave off amazon were not counterfeits, but rather wrong products. I bought a 12TB HDD and received a 6TB one from the same brand. Obviously I'm not okay with that, having paid full price for the 12TB one.

Seems pretty simple, right?