Not to turn this into a Ready Player One review thread, but just saying it's a terrible movie I think is a gross oversimplification. The movie isn't Schindler's List, it doesn't have Tarantino levels of snappy dialogue, and it won't make you rethink your life. But honestly, I can't see how anyone reasonably expected any of that, and if they did it's their own fault they're disappointed.
What the movie is is 2 hours of pure geek eye-candy and 80s/90s/00s nostalgia, with enough of a plot to strong it together. The characters weren't complex, granted, but they were fairly believable(if written a bit predictably at times). But even beyond that, visually the movie is gorgeous. Even if you hate all the rest, that aspect is phenomenal.
And objectively there is much more it shares with various parts of Shadowrun than just the literal wage slavery. People spending more time in VR than meatspace, massive economic disparity, high-tech minidrones, and that hint at the end(no spoilers)? All very 6th world.