I think that it's possible when Mark talked to a Marshal in Bayfield that the conversation was about how Mark was looking for Dylan and he was unable to find him. In other words Dylan was missing and Mark was seeking help.
BBM
That's if MR actually spoke to a Marshal, and that is not proven. If the LE had confirmed that MR actually spoke with someone then it would be different. In fact, the last press release the SO specifically states that MR "attempted to contact" the Bayfield Marshals Office, so it puts MR's statement that he "contacted" someone, or "spoke to someone" in serious doubt, imo.
Would Mark consider talking to a police officer and asking for help about his missing child as reporting him missing? I think that it's possible. MOO.
Only if he actually spoke with someone officially do I think that would be possible. I can definitely agree that if he spoke in person to one of the Marshals he may be speaking more in terms of that he casually "told them DR was missing", and not specifically that he "reported him missing" in any official way, but used that wording anyway.
The LE in their statement really didn't give us much indication besides the words "attempted to contact" the BMO, but exactly what that means with no other detail, and with MR's own conflicting statements, and the press reporting that he called, I think everyone's opinion on how he "attempted" to contact the BMO will remain a matter of personal opinion.
BTW: I'm really not attempting to invalidate your opinion in saying the above, just wanted to point out that factually we can't exactly take MR's word for it that he showed up at the MO and actually spoke with anyone given that the SO says only that he "attempted" to contact them. So by your saying "when" it's not actually an opinion anymore, but instead is stating it as fact that he did when this isn't what LE has stated. It's only what MR has said.
"The truth is out there" in regard to the MO story, so to speak - we just aren't privy to it at this point. And I think we'll have to wait to know what truly happened in regard to the MO for whatever reason - whether MR truly did speak to someone at the MO or not.