I think, in fairness, there wasn't much in the 80s that sounded like Fischerspooner or Ladytron. In much the same way as 60s rock n' roll doesn't sound anything like the Delta blues but is inspired by it.
And, if nothing else, Ladytron are nothing like an arch electro pastiche. They are, however, a bunch of women making dance-friendly music, which is pretty much the anathema to the anti-dance sausage-fest that is SYG.
Actually, alright, they are a smidge Erasure at times. But since when was being awesome a crime? Eh?