It “stems” from a deliberate effort to conflate them by the likes of the ADL .

Your article itself says:

Police now believe this was a Russian-inspired destabilisation operation rather than a home-grown intimidation campaign.

Your article itself also says that the police are the source for this assertion, and goes on to say

In June, the fatal police shooting of a 17-year-old driver of Moroccan and Algerian descent in a Paris suburb sparked almost two weeks of riots across the country in which schools, buses and police stations were torched, shops looted, mayors assaulted and police attacked in nightly clashes. The violence, which did not specifically target Jews, was fuelled by widespread resentment of perceived police racism.

And if that weren’t enough, it’s already demonstrated that expressing support for Palestine is being conflated with antisemitism.

The government initially banned pro-Palestinian demonstrations

So the government bans support for Palestine, the police enforce that ban, and the police say antisemitism is rising among young Muslims.

All this from the same article, that you posted. Very weak sauce.