I think its a bit of misnomer, because YC will always object to being called tech bros. But going by all the verbage on the topic, I would say a close approximation would be:
“Embedded Growth Obligator” (may sound more broish in Spanish YMMV)
(Thanks Weinstein!)
In more familiar but less wieldy parlance, it might be
“Rationalist non-lifestyle Hustler”
There is a bit of of an accusation of hypocrisy too, that is, YC and its organ HN will say they pander in service of curiosity, but its more like the other way round. (Make things people want! Spread your ideology later!) If thats not in itself a lifestyle its at least a narrow perspective on ikigai— perhaps summarized as “Learn Or Earn”
I would say I am not an example of techbro, because I spend time on replying to your statement without any consideration of the victory conditions.