Sadly not a scam.
When Microsoft released Win11 in Oct 2021, one of the requirements was for the device to have a TPM 2.0 (Trusted Platform Module) chip on the motherboard. There have been with discussions over whether they were legitimately intended to improve the security of Windows, or as a ploy to force customers to newer devices, whilst at the same time forcing the adoption of Win11, something that has been slow to be embraced by PC users.
According to this article;
Also, Microsoft only officially supports Win11 on devices using an
eighth-generation Intel Core CPU or newer (with some minor exceptions), a
second-generation AMD Ryzen CPU and some ARM CPU's.
Add those things together, the 'need' for the TPM chip, and the inability to upgrade with an older CPU, and there will probably be a huge number of that 60.95% Win10 users unable to upgrade to Win11. Some reports have seen internal Microsoft data which says that Win11 is on 400million machines, so that means there could be about 800million Win10 machines still being used, the majority of which will become insecure in a years time, if Microsoft continue with their plans, and unless users are unwilling to pay for continued support. And I think that support has only been said for 3 years so far, and some reports say that cost may increase each year.
That is a whole lot of computers, conservatively many 100's of millions, that could potentially suddenly become e-waste.

Hope that clarifies things.
And if I have made any mistakes, please point them out.