I don't really understand this kind of triumphalism. Would you, personally, identify as a pattern matcher who's happy to see better ones? Or do you think you have some deeper skill more robust against disruption than the math and CS folks who don't know what to do with themselves?
Note that this may include things that you don't think of as being a "skill". I've seen some people brag about being a particularly hard worker, or about a deep instinct towards Getting Stuff Done, with the clear implication that these things can't be automated the way mere mathematical analysis can.
I don't read it as triumphalism. I read it as an accurate (to my experience, as a math PhD) reflection on the existentially toxic culture of math and other intellectual disciplines, one that AI is now forcing us to reckon with.
n.b. I think math culture is probably one of the least toxic cultures that have ever existed. Its equanimity and principles are a big part of what drew me to math in the first place. But humans are human.