If his character concept was better and more than "young ensign fresh from the academy" maybe. None of the other series (wisely) had a character like that. DS9's Bashir was "fresh" for a while before they realized that he was still boring and gave him the augment backstory, TNG had Wesley, nuff said.
I'm pretty sure that you just said TNG had a "fresh" character in Wesley and DS9 in Bashir, even though you explicitly claim the other series were not so foolish. Personally I would add Kevin O'Reilly, then Chekhov, from Star Trek. It's Enterprise that had the standard issue
female ingenue. Kim (and Wang) are the best of the male ingenue characters in Trek. I think the problem with the male ingenue characters isn't boredom but embarrassment.
As for Bashir being improved by the genetic engineering retcon, well obviously people feel differently. I just stopped taking the character seriously. Unfortunately you couldn't take him humorously either. My thought is that a secret about one's birth or nature that makes one special is a common fantasy. Fantasies can be quite beguiling. But I don't think they are especially interesting unless it's your fantasy, nor do I think they are sophisticated writing.
Voyager highlighted the syndrome in the Kim episode, Favorite Son. This is a good episode for spotting stupid reviewers. The grossly incompetent ones can't even review the episode!
Maybe I'm not any judge of acting talent, but I gather that Mr. Wang is more a Mall Rats/Clerks kind of guy, which means it takes talent to convincingly portray the dewy Mr. Kim. Plus, on the rare occasions (The Chute or Timeless come to mind,) his performance seemed quite strong to me.
Whereas McNiell and Beltran seem to my undiscerning eye to behave very much like their offscreen selves. (Bored offscreen self in Beltran's case.) Also, I think the inability to do the technical dialogue is
not a sign of superior acting talent. I don't think acting Borgish stretches the talent that much. Also, given how much was written for the Paris character to so little avail, I strongly suspect weak acting is the cause. Still, I suppose my Plutonian perspective misleads.
I believe the Kim character was intended to be Paris' friend, period. They hired an Asian as a token but Paris' friend was never meant to be a main character, which is why Kim didn't even get an episode a year. I suspect that Wang thought he was supposed to be a main cast member, naive enough to take the titles seriously, and acted up when he found out different.
I've never been quite sure why people who hate Braga don't rant about Timeless. Obviously, a story about a screwup who redeems himself by self sacrifice is tailor made for....
Paris. Why don't people criticize Braga for casting a codfish in what should have been Robert Duncan McNiell's finest hour?