Hello!
Currently not, Hummingbird searches in "/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/homebrew/bin:/opt/homebrew/sbin". Reading the $PATH variable and add it to the search paths is an option we will consider for sure. Should WireGuard library become available for macOS too we will of course use it.
As a momentary patch you can consider a symlink for wg and wireguard-go - both are used by Hummingbird.
No, we don't, sorry. Hummingbird makes the OpenVPN3-AirVPN library available to macOS users in a single comfortable binary, to boost performance remarkably over OpenVPN 2 or the OpenVPN3 mainline library, but for WireGuard it is just a wrapper of the tools as we don't have the library in this environment.
Since in macOS WireGuard does not run in the kernel space (no kernel module) this core feature for performance is lost and running wg tools or Hummingbird is most probably equivalent. We can't even design a kernel extension (not even if we had the time to plan it) because kexts are no longer allowed.
However, with Hummingbird you have a built-in Network Lock (through pf) which wg tools don't offer and that may come very handy to prevent any possible traffic leak outside the VPN tunnel.
Kind regards