I already answered that question. It's also a false argument that because you find nothing to learn
there is nothing to learn. Move on.
Mining has changed a lot since then and a home PC is no longer sufficient for mining.
If you want to learn mining, you can assemble a mining farm from cheap old NVIDIA P106-100 video cards. In Russia, their price is 25 dollars and the payback period is less than 3 months at an electricity price of 5 cents