>>106556310 (OP)
Why are you stupid autist surprised about this? It is well know fact semiconductor industry that when you release a new product (say a new gen), you don't stop production immediately; instead, you keep selling it at a discount, or in third world shitholes. Everyone does this: Intel, AMD, Qualcomm, Mediatek, even Apple does it (where do you think Best Buy gets those M1s at $600?)
Now, another fact that you didn't know... Intel has kept producing i5 10400s for a very long time