So, question of if they’re safe or not will come down to HOW they did the reverse engineering. If the same engineers that delved into the jailbroken iOS devices are the ones that wrote the code (which seems likely given the prototype came from a single person), they’re going to be in trouble. If they implemented a “clean room” reverse engineering though, then they’re likely safe from being sued over copyright violations. See Wiki

So a 80W 12 Performance core CPU could only manage +10% single core and 2x multi-core over a 20W 4+4, year old CPU? That doesn’t sound like a dunk. Performance per Watt looks to be worse than the M2 as well.