I'm a creative as well and understand a lot of what you're saying, but overall disagree. I do NOT believe there's something sacred about an creator's vision, don't get me wrong. But I have seen a shift in the past decade or so where a chunk of the most vocal internet audience has gradually begun to think of itself as a collaborator, co-creator, or even director. For some things - off the top of my head, any purely commercial endeavor with no meaningful amount of artistic intent... say, an actual commercial - that's fine. The audience's feedback can be useful to make a commercial thing more commercial, and if the goal is all the dollars from all the customers, then I guess that works.
But I do believe there is work with a vision, with a specific set of aesthetics or ideals or priorities that necessarily exclude or leave out others, because any interesting work cannot be universally enjoyed. And in those cases, I think of Andrew Keen's observation that the audience has never written a great novel, never composed a symphony, never made a great film. The audience is the audience and the creator is in charge... and I do think - even myself being a member of many audiences - it's good to remember that.
Finally, I feel strongly that "polarizing" isn't a bad thing, and in fact can be a great indicator of a great work. I think of Soderbergh's quip about "what would 2001's Rotten Tomatoes score have been?" My gut reaction when I see something like TLJ where people seem radically polarized on it is: wow it must be doing something interesting, then.