Yes everyone disparages the intelligence and mental capacities of their political opponents. However, in the case of hard core leftists, the disparagement is merited. From Eric Peters at ericpetersautos.com:
Leftism isn’t so much an ideology as it is a pathology. Leftists are cognitively crippled, emotionally incontinent and morally blinkered people. This is not to insult them. It is to diagnose them.
The Left’s “my body, my choice” mantra, for instance.
Only a cognitively crippled person would, on the one hand, assert that a woman has the right to “choose” to end her pregnancy because it is her body while in the same breath also asserting that people have no right to refuse to submit to the violation of their bodies via the “mandating” of “vaccines” – and “masks.”
The Leftist will abide no interference with “my body, my choice”when it comes to the first thing; will militantly assert the primacy of the individual and her right to “choose.” That any limitation of this right is an assault upon her (and every other woman’s) rights. And then insists that no woman – or man – has any right to object to being told they must wear a “mask” or submit to being “vaccinated.”

This was the first comment on J P Sears’ “Narrative Scripts” video.
“Arguing with a leftist is like playing chess with a pigeon. You move, it knocks over the pieces, shits all over the board, then struts around like it won.”