Unpopular opinion: I struggle to get angry at this. These are clearly rip-offs of the Stratocaster design. Sure, Fender makes crappy guitars nowadays and has mostly ruined their brand. Go make a new design. Let Fender die. Cases like this are exactly what copyright law is made for, and its a judicious and good application of it. I'm not going to feel sorry for these shops because they're small mom & pop shops when I would feel angry about it if it were some huge chinese factory doing it. The same laws apply to everyone.
Except the design was never copyrighted. It was created at a time when you had to register with the copyright office, which they didn't do. This is just an attempted money grab.