I did, and if you will note, it does not define such behaviors to be a part of grooming, but rather only says that many (not all) pedophiles have engaged in them. Such behaviors are obviously wrong and I am not defending them. I was specifically talking about the cases where no physical coercion is used, since those are the cases that the whole discussion was about. Cases where children were coerced are wrong and condemnable, but also irrelevant, since the discussion is about sex that the children consented to.

Also, because the abstract was somewhat unclear on whether it considered such behaviors a necessary part of grooming or not, I looked at wikipedia before writing my comment. Wikipedia's definition says that grooming refers to "actions deliberately undertaken with the aim of befriending and establishing an emotional connection with a child, in order to lower the child's inhibitions" and generally describes actions which would be considered positive if not for their intent. Giving gifts, for example. "Hugging and kissing or other physical contact, even when the child does not want it, can happen", was the only thing even hinting of coercion that was mentioned.

Wikipedia can obviously be wrong and is not an authoritative source, but since neither the article nor the linked abstract implied that coercion or violence would be a necessary part of grooming, I felt justified in posting my comment.