Sounds like a kid's excuse:" well they would have done it anyway". Similarly, the Romans probably would have got their hands on Jesus in the end, so really Judas was just making a bit of money out of something that would have happened anyway.
They say there was no physical damage to the site, but they fail to realise that this sort of thing sets a precedence. Shall we have advertising banners hanging off the trilithons at stonehenge next? Well, they would have done it anyway digitally.