I don't think it was ripped off, but there are enough elements for the comparison to be valid. And it's not necessarily a bad comparison, with From Dusk til Dawn's cult status faithful fans, keeping it alive and strong, 30 years later. I don't even like From Dusk Til Dawn and feel that this is a far better movie, better quality acting, better presented themes, better characters. But there are some shared elements, and styles, but moreso once the vampires arrived. I think it's that sequence that ends up reminding people of it, and then going back and noticing the other similarities. But there's also plenty that's different, like an entire lived-in world/town before you even get to the juke. BUT, it only matters if you're a fan of From Dusk til Dawn. If you're not, or haven't even seen it, all of this is irrelevant.
Now, back to Sinners. This is really a musical, so I guess that does allow for some of the whimsical elements. But with the major musical sequence, do people like what it represents or like it as a plot point of the movie? Everything I'm reading and hearing discusses that part like it's outside of the normal beats of the movie. And considering how much a lot of movie watchers despise musicals, I'm shocked there's so many are loving it. But that also means it goes back to loving what the movie represents over the plot.
Yeah, I think I'm going to stick with it at a 7 - 7.5. I still say some things should've been presented earlier in the film, so that it doesn't break into 2, like Full Metal Jacket.