"Maybe USSR killed millions of people but at least it let ethnic minorities to invent weapons to kill billions"

Well, yes, from the point the poster was making. This person found something he liked to do and had the opportunity to do it.

I am sorry for his choice, and your note gives the impression you are too, but I think it’s a perfectly decent example.

I don't think it is a good example when we are talking abouz adcancement of civilisation and how the USSR helped with it. Because bio weapon research is not helpful with that I think.