I think he was talking about DisplayPort over USB-C. Thunderbolt is something different.
Considering USB c != thunderbolt
Headline from the official thunderbolt website: "Thunderbolt™ 3 – The USB-C That Does It All"
-- https://thunderbolttechnology.net/blog/thunderbolt-3-usb-c-d...
This whole sub-thread is just a really good hilarious demonstration of the whole problem, nobody has any idea how to figure out what a given cable or port will do anymore. We can't even talk about it without getting confused. (But can still be snarky to others who we think got it wrong, even when we're wrong ourselves. It's the internet, we'll never run out of superciliousness!)
The wikipedia article is both helpful and hilariously complicated:
tgaj probably just hasn't paid any attention to hardware in years but still feels like he should talk about it with confidence.
The first USB standard to incorporate Thunderbolt functionality is USB 4.
the point i made is just as true though, as the announcement that thunderbolt switched to the usb-c form-factor is 6yrs old now. (and was even linked to from someone else in this thread!)
the downvotes just show once again how hilariously dumb the average hn-reader is.
Stop calling people dumb until you can make a comment that is at least somewhat correct and on-topic.