Season 1 meant well in trying to show a child genius. The problem was the writing, letting the child genius end up looking better by writing down the adults as being a gaggle of nitwits. "Datalore" is the worst example of the bunch, though "We're Starfleet, we don't lie" in the season 1 extravaganza "Justice" is quick runner-up in terms of what not to do.
Season 2 shows immediate and robust improvement, with "The Dauphin" being exactly what Wesley should have been: Smart, awkward, inexperienced, and dealing with puberty schlock as well. "Pen Pals" also had a nice Wesley subplot in learning confidence and leadership.
Season 3 also shows improvement, but I don't remember him being seen as much.
And it doesn't help when sci-fi, in general, tries to show socially awkward above-average kids.
I'm also one of a few that has no animosity toward the "drugs are bad" speech in "Symbiosis". I've seen enough lives get hampered by the stuff and Yar's emotion in the issue felt sincere, or at least relate-able. Wes's ignorance and naivety also felt less forced than the "THEY WOULD LISTEN TO ME IF I WERE AN ADULT, WAAAAAAAAAAH!" routine season 1 was plagued with.
One could also argue that Wes might be an Aspie (Asperger's Syndrome) if not elsewhere in the Autistic Spectrum Disorder umbrella group (per DSM-V, which includes ASD but separates AS if I remember correctly), since the all-over-the-map personality Wes had on screen isn't always atypical for some who have AS. In which case some of season 1 manages to feel somewhat more authentic as a result. If not a little heavyhanded, but as most of season 1 does the "make kid smart by making experienced adults act dumber" routine and had no real grasp on such people, the dumbing down of everyone else is by far the biggest problem - which has less to do with Wes and more to do with the writing of the other characters if not the writers being inexperienced. Still groundbreakers, however for taking steps in areas they had no experience. Hindsight can reveal more after making a path that nobody had seen before.
And given how television over the decades has rarely used people with neurological issues, mental retardation, etc, Wesley is as much a groundbreaker - though a couple of TV shows in the past had one or two "very special episodes", they stumbled worse and even with more common issues. TNG might have been first with a main character as such, even if the US didn't recognize AS until the mid-1990s, with more doctors needing more time to accept the nuances. I feel bad for anyone with an ASD who was misdiagnosed, given medication and dealt with hideous side effects.