> Most displays are 60Hz

This was true even a couple years ago, but these days, most mid-range and above TVs [0], phones [1], and monitors [2] support 120Hz, which is a nice integer multiple of 40Hz. But lots of these devices default to 60Hz (or slower), so you can't really rely on most people having this enabled.

[0]: https://www.rtings.com/tv/tools/table/196699

[1]: https://www.gsmarena.com/results.php3?nDisplayFramesMin=120

[2]: https://blurbusters.com/faq/120hz-monitors/