He doesn't say "you" he says "Yor". As in the alien in the TNG uniform. Kovich explains that Georgiou is suffering because she didn't just travel through time, but also through universes. He compares this to Yor, because he is the only other person that Kovich is aware of who also travelled through time and universes."You here traveled forward from 2379 and across from an alternate universe created by the temporal incursion of a Romulan mining ship."
what does this mean to you then?. If Discovery isnt set in the Kelvinverse then what does the Romulan mining ship have to do with the USS Discovery?. The USS Discovery travelled into the future using a red angel Ironman suit....
Also Discovery didn't travel forward from 2379, they came from 2259. If you're still unconvinced I can also provide screenshots of the sub-titles...