I like Scott Bakula. I wanted him to do well. But let's be honest- Archer had two defining character two traits; he had a dog, and ... wait. He had ONE defining character trait. Which wasn't a character trait, it was a pet. Was Archer "duller" that Adira in Disco? Yeah. I think so. But no one says that Archer is a token! No one goes on rants about Enterprise being bad because Enterprise had too much representation (HA!). No, it's allowed to be judged on its merits, for better or worse.
The problem here is that the token has a specific meaning, that connects to identity, and if the show traditionally centers white men and the culture traditionally centers white men, and this specific iteration of the show also centers a white man, he can hardly logically be called a token, can he?
I don't really agree with
@Paul Farquhar's argument that the show has to do minority identities "right" or else it's committing some sort of crime, but the decisions re: Adira were not great. If you're going to be bold and have an NB character, why also make them an annoying Wesley-type. I don't think it's a duty or whatever, but it's like, a good example of what I see somewhat careless/inept writing in Disco. Disco has been willing to make bold moves - I don't think anyone could argue against that - but it's problem has been that the writing isn't up to the quality it has needed to be to really follow through on that boldness.
As for boring contest, I have to agree - Archer is a far worse character than Adira. The trouble is both are pretty bad. Archer is like a 3/10 yawn-fest zero personality but at least not actively repulsive (looking at you Paris, Neelix, early Chakotay) dude. Adira has some personality (not a great deal, but some), and whilst not a deep character, is at least vaguely memorable. The GreyTal stuff whilst a bit confusing honestly was sweet at least. Whereas her Wesley-like behaviour was... annoying. It's always annoying. I'm not sure why writers put "teen tech/science prodigy" characters in these shows. I've never met anyone who likes them. Certainly not even teen tech/science prodigies! I had a friend at school who was a Trekkie and years ahead of science/math stuff, and invited to CERN for half-term and stuff, and he loved TNG but he did NOT love Wesley any more than the rest of us. But they keep doing it - SeaQuest DSV did it for example.
Boring and unlikeable tend to be a matter of personal opinion.
I would argue that that's less the case than you're suggesting with TV characters.
There are very few characters, outside of Babygirl Meow Meow types (or the straight equivalents thereof), who really split the audience on whether they're likeable or boring or not. There will always be a few people who thought Wesley was a good character or whatever, but it's unlikely to be very many until the nostalgia sets in.