Not the OP, but as an older guy, I'll throw in "Everything Everywhere All At Once". Very fast paced with incredible concepts being thrown in seemingly at random. When you reach the infamous rock scene, it feels like it's the first time in the movie you've had time to draw a breath. Also very confusing emotionally as you'll be laughing one minute and snivelling the next.

I asked because I really don't see modern movies as fast paced, on the contrary mostly everything lacks rhythm and takes too long.

Not to talk of the endless flashbacks. A woman sits under the shadow of a tree and they need to show us how she was there whith her grandpa planting the tree and talking some BS. It's like a gigantic Freud revival, everything that happens has roots in the past. An unhealthy trend, people are somehow trapped by their past, unable to break free.

Alien was a little long for the time it was made, in part because of the last scene. It made sense to extend it for great nightmarish effect. But the characters were trapped in their present, we don't see Ripley as a child getting scared of croaches. And I don't see it as slow. There's a build up, then action accelerates, there's tension and rhythm.

Everything Everywhere is OK, it tries to be weird and funny and moving and, at least for me, it works. But a lot of recent movies I really can't stand. They fail to tell me a story, there are scenes, stuff happens, but they're inconsistent, like justaposed without a logic or the will of characters to glue them.

Everything Everywhere is actually an example of how the main character drives the action and makes the movie feel real, even if the plot is total nonsense :)

Not the OP but I could not watch the recent Elvis biopic by Baz Luhrman because it was the most frenetic, ADHD fast-cut movie I have ever seen. It was beautiful looking but felt like it was made for a generation of people that couldn't stand still.