Honestly I think the primacy given to writting generally tends to be a bit questionable, perhaps because critics themselves are primarily writers.
Writters are arguebly more disempowered than they should be in cinema but ultimately I would say its a visual medium and directors generally tend to be those in overall control of films.
The two areas really arent going to be cut and dry seperate though, beyond directors writing scripts the righting process may also be were a lot of visual ideas are created as well.
In all visual & 3D media (films, videogames, etc), writing is indeed taking a back-seat, most of the time.
Lots of people, whether film viewers or gamers, won't give a shit about writing 99% of the time. As long as its
entertaining with lots of pretty visuals (and gameplay in the case of games), it's pretty much fine.
But I guess, because I love solid writing, I'm a sucker for solid writing and really notice when its masterpiece level. It immediately sets itself apart.
If you're a gamer, a good example would be the
Legacy of Kain videogame series, and the game called
Vagrant Story.
Both have incredibly solid, even masterpiece level, stories, that came to be because actual talented writers wrote the script.
Nevermind the gameplay (which was basic in both games), the games were amazing based on story, and memorable.
I guess in film that writing is kind of less important, because visuals give the joy not really the writing.
But what I will say is that
solid BASIC writing is still necessary, just like in Jurassic Parc.
When the writing is
abysmal then you really notice it, it makes a film terrible. And Hollywood is riddled with that. How many times have you just screamed at the screen and wondered
WTF the characters were doing in that scene because it made no sense? That's bad writing for you.