Honestly neither do I sometimes, I think it's because I've recently discovered that in our social circle the majority of people actually disagree with his very militant hyper activist-y viewpoints and are just too afraid to stick their heads above the parapet.
I've ended up unintentionally becoming the spokesperson against his absolute tripe, though tbh although it's exhausting, it has done something, others are now speaking up too and the ones who would previously agree with the tripe-spouter have resorted to derailing and memes because they can't handle facts, studies and evidence being presented to them.
For those interested (and for those who may just find it funny), the "friend" in question ended up making a whole channel dedicated to "debate".
He derailed me stating that you can tell what sex a person is just by looking and asking for examples of what behaviours, expressions, patterns that align with each "gender" and how do they not essentially amount to regressive stereotypes by talking about penguins being "unable to discern what sex other penguins are".
He was unable to square that the article he was supposedly reading was talking about humans being unable to discern the sex of penguins as they're not obviously dimorphic, not about penguins themselves being unable to discern, and went on a massive tangent about how penguins have to simply guess (How he expects humans to have mind-read penguins I have no idea).
Which then derailed further into gay penguins, and penguins actively making the choice to be gay, and how he hopes penguins "choose" to be gay vs just "guessing" what sex of penguin they're mating with. (didn't know being gay was a choice but hey-ho!!)
After an entire night of not answering my question and instead making it about penguins and whether or not one can discern what sex a person is from just looking, he then the next night went onto the usual "assigned at birth" nonsense.
I pointed out sex is determined by the sperm in utero, brief mention of nub theory as it's just a theory, and asked him how exactly I know what sex my 31week pregnancy is if sex is "assigned at birth".
He brought up intersex, because of course he did, I countered with DSD's.
(Of course he replied so fast that it was obvious he ignored literally ALL of my linked sources)
When I pointed out sex is not assigned it's observed, he derailed once more and we ended up debating the definition of the word "assigned" (for hours before he finally conceded whilst also still disagreeing with me).
After asking about 6 or 7 times about my original question, he then decided to get into a debate about the definition of the word "stereotypes" instead of giving me examples, which went on for further hours and resulted in him conceding whilst disagreeing again.(He loves to do this)
All in all, it was headache inducing, however it did give others in the group courage to join in and speak their minds freely - though unsurprisingly he ignored all of them (men) and would only respond to me.
He seems to only ever want to argue/debate me specifically.
Think it's pretty clear at this point he genuinely holds some kind of resentment or misogyny towards women as he literally just will entirely ignore anyone else saying the same as me or agreeing with me and double down talking to me and me alone, as if to try and intimidate me and make me back down on my views which are backed up vs his which are not.
And ofc, he linked no sources throughout the entire "debate".