It's not actually 2 years. It is 4 years of progress.
Zen 3: 2020 release
Zen 4: 2022 release
Zen 5: 2024 release
The author is disingenuous by looking at only the X3D variants. The Zen 3 X3D variant came out late.
For comparison, in the same time frame, the M4 is 52% faster in ST and 72% faster in MT than M1.[0] If you go by what you can physically buy in stores since Zen 3 was released to now, Apple's chips have gotten 83% faster in ST and 143% faster in MT.[1]
[0]https://browser.geekbench.com/v7/cpu/compare/433673?baseline...
[1]https://browser.geekbench.com/v7/cpu/compare/435139?baseline...