I do not see why not! Lots of people would benefit from it! If you would rather use screenshots even, you definitely could make a post in Miscellaneous Tutorials board about it.
https://feral-heart.com/smf/index.php?board=140.0 Essentially, the official instructions on downloading FH for a Mac are very similar, as they both require third-party applications. Still, after looking into CrossOver since your post, CrossOver can also be used for running running PC applications on Mac and Linux as well, which may open the door for more users to try Feralheart out without having to follow the official instructions on running FH on Mac using PlayOnMac/PlayOnLinux.
Anyways, this is incredibly helpful, so thank you for posting this!