I've never really been a fan of Mari, tbh. Something about her always bugged me since I first started getting into MM。. She just... was never my kind of idol, and I found her annoying for whatever reason.
Both her scandals made me kinda dislike her more, but I certainly don't hate her. Still, cheating is not good, even if the husband is probably an asshole and we don't know her circumstances.
If she wants to come back to showbiz, sure, whatever. I just don't think she'll have nearly as many fans as she did once upon a time. Shit, even Nacchi couldn't regain her popularity after her scandals back in the day.
I dunno, call me an asshole, but I feel like if you fuck up you should be punished for it. I never really feel sorry for idols who get caught in dating scandals (which Mari did... almost ten years ago, holy shit), since, to me, it feels like they don't care about their fans since they're breaking the rules. Sure, the rules are bullshit, but I dunno they're still rules.
If it's a stupid scandal (like Nacchi's Playstation thing), then lol. But something serious like the recent Nogizaka fiasco? If an idol does things like that I judge them. Which is bad, I know, but it's something I've just kinda always done...
I get that they're only human, and I'm probably being far too harsh, but eh. Obviously people can still support idols that are involved in scandals and stuff, and since we don't know the circumstances it doesn't automatically make them a shitty person, but imo it's still. Not a good thing.