Below are the couple channels where I found constant MSFS inclusion in their gaming benchmarks using various hardware
There are other channels where they do test MSFS occasionally in a single-video format using specific set of hardware.
And in big hardware launch events (such as Ryzen 5000 series), some popular channels such as Linus Tech Tip, Paul’s Hardware, GamersNexus and Jorrod’sTech do have coverage for MSFS