I don’t believe this is true. F2FS is still meant for use on devices with a FTL (flash transition layer) meaning that the device is doing wear leveling itself and a filesystem doing it twice is redundant and counter-productive. The flash-friendly part is referring to other filesystem features (there are many)
Steam supports this natively. In the steam desktop client, click your profile in the top right and push “Account details” now scroll down to “PLATFORM PREFERENCES” and uncheck windows.
I want to reply something clever so that people actually read your comment and stop downvoting it but I couldn’t think of anything