But they didn't mention OMD specifically, and Peter and MJ are exes, they have to mention it, it's not for no reason as you suggest, new readers might get confused about whether Peter is dating her or Carlie. It's not like they brought up Mephisto or whatever.
your missing the point.
I hated OMD and the start of BND. I thought the whole deal with devil thing ruined the character.
I stopped reading for years and only started again when Romita Jr did an arc, then dropped it, and then started picking it up again when Black Cat came back into the picture (issue 600 i think).
Everytime Slott issues would roll around we would always get these tounge in cheek jokes referencing OMD or the results of OMD (MJ being an ex is a result of that). I'm fine with them saying oh she's an ex, but an extended conversation with the Thing about it or the joke from the start of big time I think is just trying to antagonize people who still think they could have done these stories with them together.
Oh and Pete not having Spider-sense is really lame.