A man claiming to be from the future takes the patrons of an iconic Los Angeles diner hostage in search of unlikely recruits in a quest to save the world.
Arguably yes. The movie prominently features a piece of AI technology similar to VR that convinces people virtual reality is better than living in their current reality. The system has a hypnotic/zombie effect on some, an addictive effect on others, and definitely challenges perceptions of reality.
Yes, at the climax of the final battle, characters are heavily restrained by many cables (looking like electronic tentacles). Intense and likely triggering for some.
Cartoonish violence throughout, with mild gore escalating as it progresses. Most is played for laughs (characters pick up a severed leg from a pile of dead body parts to use as a weapon).
One character has frequent nose bleeds that are prominently featured in the plot.
Some police lights earlier in the movie, and a small bit as they go down some stairs, but most of it is toward the end, when the "tornado" forms. It lasts for about 5 minutes, maybe, and is mixed with scenes that don't have flashing. It's not strobing, and I think maybe it wasn't taking up the whole screen or wasn't going completely black in between flashes, but it was decently intense flickering/flashing.
No beastiality per se, but there are scenes that include graphic images of a creature's testicles and phallus (played for laughs), including a human character being showered by the creature's glitter semen (some of which goes in his mouth). Could be triggering or off-putting for some.
More implied than shown. The inside coils of a mattress are shown bouncing heavily due to implied sex. Characters collapse on a bed, lie in bed together, talk about pregnancy.
A running theme is criticizing society's general direction in light of technological advancements. A character questions whether or not they would even want to be born, given the state of things.
Multiple characters are hit by cars, usually as a fast "surprise" death. One is more graphically crushed by a car. Most violence is cartoonish/over-the-top.
Gun violence is a major theme of the movie. School shootings (implied/off screen) are so frequent/common, that some parents joke about how often they've lost kids to it. Some parents grieve, but the world basically brushes it off as an unavoidable fact of life. The humor is very dark.
Also, numerous characters die on screen from being shot (often excessive, cartoonish levels of bullets).