All views, regardless of however much one may intend to be objective, are subject to some degree of bias. Even a journalist's interest in a subject is a reflection of his/her bias. This is why balance is so important to honest reporting.
My point is that you're going to get a negative bias from a person's ex-lover , just as you are going to get a positive bias from a current lover. If you take an ex-lover's criticism at face value, you're not doing investigative work; you're passing gossip. Taking a current lover's praise at face value is basically the same thing, except it does less damage.
If you're going to write inflammatory language into an article (as in the title of this piece), it would serve your objective best if you show some due diligence by thoroughly investigating both sides of the argument. Otherwise, the piece lacks balance and leans heavily against the accused without any apparent questioning of the accuser.
The problem with any posting on the internet is that anyone--jilted lover, rapist, pedophile, compulsive liar, literally anyone--can write whatever dishonest, vile trash they wish and post it with impunity, enjoying the presumption of truthful reporting on the part of readers. If anyone whose name is dragged through the mud makes the tiniest attempt to set the record straight, it merely adds to the suspicions people have been fed (and have eagerly swallowed).
Whatever may be said of Jossi's motives, at least he has the cojones to act honestly, in full view, using his real name and taking responsibility for what he does. Speaking of motives, one important motive clearly absent from his activities is malice.
As far as the ex-lovers and their websites, the question as to their motive remains. I read one exchange in which they openly expressed their hatred of "premies" and gleefully discussed the idea killing them. Pretty sick stuff, no matter how you slice it. A few (even a million) questionable edits on Wikipedia pale by comparison.
I say again: Some journalist.