that is not native
Regardless, "native" is not the end-goal here. Consider Wine/Proton as an implementation of Windows libraries on Linux. Even if all binaries are not ELF-binaries, it's still not emulation or anything like that. :)
OS/2 lesson has not yet been learnt.
If the devs then choose to improve "Wine compatibility" or rebuild for Linux doesn't matter, as long as it's a working product on Linux.