It really isn't. The "right" has been doing the exact same thing for ages. See the weaponization of anti-semitism allegations by the Republicans (against Ilhan Omar most recently) or Tories (against Corbyn and Labour in general).

It's not a new phenomenon. Before racial/ethnic issues came to the forefront, partisans used religion and other relevant ideologies.

> weaponization of anti-semitism

Labour is the only party apart from the BNP to be investigated over allegations of racism by the Equality and Human Rights Commission.

A fact the Tory media, politicians, and supporters (case in point?) repeat incessantly, despite it being a Labour party matter. That's weaponization.

> despite it being a Labour party matter

This is an internal matter and has no bearing on who might be leading the country in a few weeks and voters don't have a right to know and the Tories don't have a right to point it out? Ok then.

And she was the exception that proves the rule.