I don't watch that guy, but Marvel has systematically wiped their long term couples, I will agree with that.
About Gambit 'harassing' rogue because she's clearly not interested... that second part just isn't true. The mini where some are complaining about was not trying to show that. And even before that in other titles it wasn't true. In UA, she was hitting on fake/ RSgambit, and she told him that. Sure Dugan was only writing that to troll the Gambit fans, but it was still there. In Astonishing, on the astral plane, she didn't turn him down, she said I'm not sure if I can take getting my heart broken again, but ok, then we'll save the day, but then Xavier swiped her away.
In the mini, when they wind up on the floor of the danger room, she literally stays there underneath with her arm around him while pixie and Betsy talk about them, when kitty is talking about the mission, she says they need a couple, and rogue says that they are in flux, not over and she's moved on and not interested any more. And again on the beach, she's not sure if they can fix their relationship, not she's not interested.
If you don't like that because you think he should be done with her nonsense, fine, that's a valid opinion. But you don't need to agree with the haters that he's being a creep, going after a girl whose not interested. She shown that she's 'interested' but then gets cold feet, not the same thing.