Perhaps she herself wasn't a globalist scumbag. She presided over a nation that was taken over by said globalist scumbags however. Britain is immeasurably worse off than before her rule as sovereign. Especially with regards to defending the British culture and people. Their nation is overrun with barbarian foreigners in such numbers that they'll likely never bounce back.

So even if she isn't one, then she's a failure as a ruler instead. Either way, the results are the same. I care about the what, far more than the why.