Possible. On the other hand, the Mossad has long worked hand-in-glove with French intelligence. As in the US, it's often hard to say where the work of one agency begins, and the other ends.
A possible ('extra') motive could have been the silencing of Owens by 'sending her a message'. Indeed, she recently stated that she and Tucker Carlson were explicitly told on September 10th to "lay low for a while" because "someone is out to get them too."
Silencing Owens is obviously failing at the moment, but the kinds of people the Macrons are connected to don't 'give up'. Based on Proussard's and Rey's research, Emmanuel appears to be something of a Rothschild protege, and 'Brigitte' is (very likely) part of the elite pedo network in France. And powerful pedo networks are ruthless.
It's this that's at stake, not the Macrons having to admit that they're two closet homosexuals.
Recall that it was Kirk who Trump asked to contact Owens back in February to ask her to, on the Macrons' behalf, cease talking about their strange backstory. And she did, for a while, but then she returned to the topic, and then the Macrons launched a $50 million lawsuit against her, and she just kept talking, divulging all its details.
And then Kirk was taken out, and that is all Owens has focused on since then.
I'm not suggesting this is why Kirk was killed, just noting that Owens' high-profile battle with the Macrons was happening parallel to Kirk's 'waking up' vis-a-vis Israel.