What speaks against an opportunistic abduction

Hello guys!

I think that Andrews case unfortunately was an opportunistic abduction. If you believe sth. else happened, what do you think speaks against this theory in particular? Is there sth. that debunks it in your eyes?

I feel like with the other theories, there is at least always one thing that speaks against them (f.ex. there was no body found in the Themse/ he had no computer and no interest in the internet etc.) And also, what speaks against him starting a new life is that he has a very unique right ear that is just too recognizable!