From the video game aggregation space, you tend to see the type of thing you're suggesting (games that are big-budget-questionably-reviewed) have _much_ lower user-scores than critics. I would be surprised if user-rated movies was different.
As for the video games space, well, I don't know it enough. But I suppose you could argue that video games are different from movies in that they require a much higher level of engagement, both in terms of time and concentration - not to mention the monetary investment. So it is reasonable that they are evaluated more thoroughly by their users and that whatever hype surrounds them has a lower impact of their final rating.
Although I would rate Blade Runner higher than the martian. Your mileage may vary, one size does not fit all etc etc.
It would be one thing if this were just one book, you might argue those are just those particular characters. But it's a theme across his books, one that thankfully often gets removed or toned down in the movie adaptations. PKD is a misogynist. He is the author who changed my mind about how misogyny works and just how pervasive it actually is.
In Blade Runner's case, "Do Android's Dream of Electric Sheep" is not a coherent book. Blade Runner went a long way towards improving the cohesiveness of the plot, even regarding the ambiguous components: they are intentionally ambiguous now. The action scenes that Deckard practically walks through in the book have real impact and danger in the movie. And Ridley Scott thankfully just killed Deckard's wife off completely, making her a symbol of nostalgia and mourning, rather than contempt. Oh, and they completely skipped the weird religious VR experience sub-plot that never amounted to anything in the book anyway.
I think it's easy to miss how much general improvement there's been in moviemaking. I accompanied my mother to see The Transporter Refuelled a few weeks ago, and by 2015 standards it's dreck. But at the same time I was amazed by how polished everything was; the pacing, the movement, even the terrible dialogue was only terrible because it was doing clunky exposition. In some ways it was better than a good film from 20 years ago, and compared to a bad old film like say Armed and Dangerous it was night and day.
At least, not on HN. However, would you put The Martian almost on par with 2001? Would you rate it more than Blade Runner? I wouldn't do either, no way.