Then there's the character of Konom, a renegade Klingon who joins Starfleet, whereas televised canon dictates that as of the 24th century, Worf is the only Klingon to have ever served on a Federation starship.
Wriggle room. Konom didn't attend any Academy classes? We seem him simply wear the uniform.
Similar complaints were leveled at T'Pol, with some fans insisting the Spock was "the first" Vulcan to serve in Starfleet.
there's the fact that the Excelsior is portrayed as being huge enough for Kruge's bird-of-prey to fit inside its shuttle bay.
They cloaked it. LOL.