He was speaking of the Enterprise in its refit configuration.
If you had been around for me 40 years ago I wouldn't have had to write the article

Didn't Khan say, however, that it had been 15 years?
You mean like transporters, God-like beings, the Mirror Universe and all the other stuff Trek expects us to buy. An inconsistent timeline is the least of Trek's believability issues. And honestly can be simply explained as constantly shifting due to all the interference that has been done in the timeline. If one chooses the single-timeline way of looking at things.
Disagree almost completely. Transporters are probably the hinkiest idea of all, in that we don't have a real, ethical solution to disposing of the original. I have no problem in believing that god-like beings exist; YMMV. As I understand physics, alternate universes are highly possible, and in some models likely. Warp drive? Alcubierre seems to have developed a pretty workable theory that's waiting for engineering to catch up to it.
On the other hand, and returning to one of my go-tos...so we're supposed to believe that Spock had at least two siblings. OK, sure. He never talked about them. OK, maybe, he a reserved kind of guy. One never mentions the other. That's...weird, but possible. Their parents never mentioned them either; wouldn't it have been a natural for Amanda to say, in Journey to Babel, "Your father struggled with losing you to Star Fleet, especially after your half-brother ran off to join that cult"? It's getting weirder. No mention of them when Spock discusses his father with Picard? Burnham doesn't discuss Sybok with Spock or Sarek.
Each one by itself might be believable. Two or three of them together, they might be able to get away with. Put them all together, and I find warp drive much more believable than the bevy of extreme coincidences necessary to explain everything we've seen. After a while, it becomes pretty likely that TOS, TFF and STD take place in different universes.