Interestingly, his tone-of-voice seemed neither angry, nor joking. Just - I assume - the sort of tone-of-voice you'd have after riding for 200+ Ks in 40+ degrees Celsius.
But here's the reason why I'm pretty sure Jakobsen wasn't actually angry:
Vuelta a España: Fabio Jakobsen says he didn’t have the legs to sprint on stage 13 | Cycling Weekly
Weirdly enough, this article doesn't include the part of the interview where Jakobsen basically said that if you as the sprinter feel like you don't have the legs to sprint, then you
have to let your teammate try. From what I recall - watching the interview - he was basically saying that it would have looking really stupid if he'd insisted on sprinting, only for Trentin to beat him.
Also, what an insane luxury-situation to be in! I think for most other teams, even if the sprinter didn't have the legs to win, he'd have to go anyway because he'd still be his team's best chance at any sort of placing.