I don't think they should, this is the way the industry moves forward and Secure Boot and TPM 2.0 has been around for a while, it's time that Microsoft starts using it.
Well it is all well and good that Microsoft starts using TPM, but they should NOT ban PC's that do not have it. My PC is almost 6 years old and it runs win10 perfectly fine with no problems, insider build Edition Windows 10 Home Version 21H1 Installed on 12/11/2019 OS build 19043.1081 Experience Windows Feature Experience Pack 120.2212.3920.0. Beta channel. I ran the Dev channel for a little with no problems too, but step down to the Beta channel. They should not ban pc's just because of TPM..