It’s not just tpm 2.0 support, but simply Intel 8th gen or higher or Ryzen

Intel 6th gen CPUs could totally support tpm 2.0 but they decided to cut them off because $$$

There is no real technical reason, management wanted the line to go up so they had meetings and meetings with the engineering teams in order to find a somewhat reasonable excuse to send to the landfill millions and millions of perfectly usable computers