I enjoyed the movie as well. It was looonnnnggggg I didn't realize how long when I started it, had to watch it in 3 sittings.
it took me two. It also took about 1/2 hour or more to really get into it. It's a story and one well told, well worth hearing/seeing. But it's no "Goodfellas" or "Casino" with steady action and stylistic touches. But it's a really good piece of the American story to be told, and it was told well.
The de-aging CGI was not up to the task. If you watched, the facial expressions in the de-aged scenes were just wooden and clearly artificial. It was like DeNiro had had a little too much wine, too much fun at a botox party,...

Ok maybe not the last part, but it was like a bad botox job in those scenes.
Still, it was a tour-de-force through post-war America, and epic tale. If you don't like Scorsese, you may or may not "get it" or get into it. But if you have the slightest fondness for his work (I'm smitten), you'll enjoy it quite a lot.