You misunderstand.
She didn't beat a scandal to the punch, she created an even bigger scandal, by taking a massive shit on what's deemed sacred ground in 48G, namely the election. She managed to piss off current members and former members as well as fans. She acted like a complete moron. Her actions have caused numerous Japanese fans to view NMB48 as a problem group, but not even that, going so far as to call it a dying group, and as cancer. They feel sorry for Sayanee having to be in that group when she could go on to do better things than that. It's not even about Riripon alone, it's the result of a number of problems and scandals accumulating over time. But of course Riripon is what broke the camel's back.
And so Riripon, what does she benefit from this all? She created publicity? As if that even matters. Being an idol is a very tricky thing. The ones who support you are idol fans. Those who aren't idol fans, naturally enough don't care at all. Then, when you graduate, you tend to lose whatever support you had, because idol fans are fans of idols, and not former idols. This means you need to start from scratch again. And people just don't care about former idols.
Right now a number of F-tier tarentos and people who for some reason manages to be on TV and have an opinion on things and getting paid for it, have an opinion on this issue. They are harsh towards the former and current idols who criticized Riripon, and they are harsh towards the fans that criticizes Riripon.
Tsuchida Teruyuki, someone who many 48G fans should know who are, as he's been a host of a number of 48G related TV shows, had something to say about these F-tier tarentos as I like to call them, "media personalities", in other words. He said that those in media who have an opinion on the Riripon issue (i.e., criticizing those who dislike what Riripon said and did), have never bought a single 48G CD in their lives, nor have they ever voted in the election.
"You didn't know who this girl was until last week."
"If you are a fan of AKB48, it's natural that you criticize."
He went on to say that some members are working very hard, and doing their best without being in a relationship, and thinks that Riripon's actions is a betrayal against those members.
What Tsuchida points out, is that people like this, are opportunists, who now appear to be engaged about Riripon, defending her or whatever, but in a couple of weeks time, they will all have forgotten about her. Because they don't care about her or about idols. They've never supported idols, and never will. Unlike idol fans who have been fans for years, dedicating their time and their money to this.
And so when Riripon graduates, and whatever she does - likely continuing as a tarento under Yoshimoto - she will not have the help of idol fans, who she betrayed, and basically insulted. She will have to look somewhere else. And knowing how things tend to go for former idols, she'll become another anonymous irrelevant person. So much for allegedly being badass and having guts.