IF you were making a bioweapon, you'd probably try and do the opposite so you can try and target it better. This is a really dumb bioweapon because it infects y

IF you were making a bioweapon, you'd probably try and do the opposite so you can try and target it better. This is a really dumb bioweapon because it infects you worse too - in general bioweapons are just a terrible weapon for non=suicidal nation-states because you can at least aim nuclear weapons, but you can't aim a virus. This mutation is exactly the sort of boring everyday mutation viruses pick up in the process of being viruses - they mutate quicker than our DNA and picking up something like this is with a dna replication error leading to a little stutter is not hard at all. HIV, influenza, etc are all examples of how effective good old fashioned natural selection and random mutation is at advancing viral capabilities and evasion strategies without any help from humans needed.