Have you checked out the Miriam_yaniv account on Twitter? (You don't have to have a Twitter, just go to Twitter.com and put in that name.)
She's an Israeli immigrant, fluent in Hebrew, seems pretty invested in her Jewishness and not just in a secular way. She talks constantly about regularly going to synagogue. Bur she's there saying "GOD sees all, trust in Him" kind of shit. And all the Jews I've known who bother with synagogue don't invoke God in what sounds like a Christian fundie way. In fact, many prefer to spell "God" as "G-d." So first question, is her religiosity, her interpretion, "accepted"?
Second, and this goes to the secular as well as the religious aspect--Miriam's been on record as donating to JCC, going to community Shabbat dinners and so forth. And as that's getting out, it's getting out that they're Jewish and more references about that, which could put these orgs and individuals on the side of "decrying hate speech" and, to the Yanivs, that means supporting them.
So second question, when if it, if it ever is, kosher for a local Jewish community to shun people like JY/MY?
Yes I have. What it demonstrates to me is that she's a typical Ashkenazi Israeli baby-boomer. Many of them are very emotional but not in a pansy cry-all-over kind of way. More like they go from zero to bat-shit crazy angry in a single heartbeat.
I'll admit I was a bit of a trouble-maker in school and I knew exactly what it took to make a hebrew teacher explode in an undying fit of anger, and it didn't take much - and it looked and sounded exactly like Miriam.
Secondly, while she's an Israeli immigrant, her family is not from there. They immigrated TO Israel like many did from Russia, Germany, or Poland and brought their family traditions and foibles with them. Not all Israeli jews are religious, either. There are lots of cultural or secular jews in Israel. Typing the word "God" instead of "G-d" doesn't mean anything except she's likely not an orthodox jew.
She may have been more religious before she met Yaniv's dad, but people become less religious in judaism all the time.
Regarding her donations to the JCC - lots of jews actually donate yearly and forget that they do. You can be set up to automatically donate every year from a credit card or even a bank account in a kind of set it and forget it Ronco style operation. It's extremely easy too, as I think they even still take cheques.
Community shabbat dinners are usually open to even the least religious. If you can prove you're jewish, you can come. In fact, my friend who's not jewish used to go with her jewish boyfriend. The day after they broke up, she got a call from the organizer saying if she showed up, she'd be escorted out.
...on the other hand, if someone is a below-the-radar paedo, and the mainstream (ie: conservative) news hasn't outed them yet, they usually still have a place in the community. She's not the one being accused of paedo, so I doubt she'd be shunned, but Jon certainly would be banned - unless he agreed to rabbinical counselling through the penal system.