That's not the whole story. There are further responses in that thread, including the opposing viewpoint from the TunSafe author.
* https://lists.zx2c4.com/pipermail/wireguard/2018-March/00246...
* https://lists.zx2c4.com/pipermail/wireguard/2018-March/00246...
are the most relevant ones. (There are more, but they go slightly offtopic.)