Hanlon’s razor. I myself had no idea that 88 had any nazi-related meaning before I read this article and thought nothing of the title when I first heard it. It seems perfectly reasonable that the dev could have done the same, especially since they were willing to almost immediately change the name and remove all existing promotional material once they found out.
Infestation 88 devs address controversy over Neo-Nazi claims (www.pcgamesn.com)
Infestation 88 developer, Nightmare Forge Games, have responded to claims that the '88' in the game's title refers to the Neo-Nazi salute.