https://www.tomshardware.com/reviews/gpu-hierarchy,4388.html
RTX 4070 Ti is a RTX 3090 Ti
RTX 4070 is a RTX 3080
RTX 4060 Ti is a RTX 2080 Ti and RTX 3070
RTX 4060 is a RTX 2080 and RTX 3060 Ti
RTX 4050 is a GTX 1080 Ti , RTX 2070 SUPER, RTX 3060
It is not difficult to see the pattern, just look at the GPU specifications, it is not a coincidence, and it is quite predictable. The manufacturer is just playing with disabling cores.
It is not new, Nvidia has always done this. Initially, longer than a decade ago, limiting the GPU through drivers, but someone found a way to hack it, so the manufacturer started limiting the GPU by hardware at the factory. The same thing happened when people started putting vRAM in themselves and the manufacturer restricted it again on following models.