That's very true. Those who dislike Remus/Tonks claim that there has been no foreshadowing whatsoever; those who like Remus/Tonks have seen the built-up in OotP and can list a dozens of examples that clearly pointed towards this pairing. It's always a matter of perspective and of interpretation. (fernwithy, for example, spoke about Remus/Tonks hints on her LJ.)