2024: https://www.cvedetails.com/top-50-products.php?year=2024
9 of 10 are Windows branded operating systems. 3,276 across all of these platforms. Of these, over 1,000 are different versions of Windows 10. Compared to 1799 on the Linux kernel, which is actively developed and will be actively developed for the foreseeable future.
Are you arguing that Windows doesn't continuously get CVE entries? That is not supported by the data.
It is not logical to arrive at the conclusion that after the manufacturer states they will no longer address vulnerabilities, which are actively being found as if this year, that this is FUD.