In the same way that ROUS's - Rodents of Unusual Size - are just rats but bigger, Radroaches in Fallout are the same exact thing as Cockroaches but bigger.
Size is literally the only difference between the two, and most of the "Radroach" posts already have that tag anyway!
At the very least, it should have the Blattodea tag by default.
It's a small issue, but most people don't like seeing bugs when they're looking for porn. Having something like that slip through their blacklists would be a pretty big boner killer! x_x
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