This game's story is okay, but the level design in it is great, especially when playing as Oddsock, Toggle, or Swoop. There are a couple of very noticeable bugs that haven't been fixed, such as profile corruptions, random online disconnects, crashing after using the home menu on PS4 while in an online game, pod window distortion when transforming into other characters, and soft locking, but the game is still rather enjoyable thanks to what good things it has to offer.
Online multiplayer is more enjoyable with experience with the franchise, and as long as all players have a great internet connection. However, not being able to join someone requires closing the application, and opening it again (for PS4 users). PS3 and PS5 users don't have this issue, so they're fine not having that issue. Unfortunately, cross-platform play is not added in the game, so PS3, PS4, and PS5 users can't play with each other online.
The community levels are all over the place when it comes to how good they are to play. Most Team Picked levels may be enjoyable for certain players, but most of them have level design issues, and falling out of bounds. Others like hangout levels, scenery, films, etc. are more enjoyable to experience. There is some cringe, but I suggest not going to those levels if they're really not your type. Trying to create good levels is something to get interested in, but it takes a lot of trying to get used to the tools of the game.
While I don't like these said issues, they take time to get used to. If LittleBigPlanet 3 really isn't your cup of tea, you can try the other titles, Dreams, or advanced creating software on PC. By the way, this game is pretty fun to mod or use modded tools if you're into that, but having experience of the game, and knowing links to LittleBigPlanet Discord servers is required.
Overall, this may not be something to keep a grasp on for the average player if they're not that experienced with the franchise, so attempting to master the previous titles is recommended. I feel like things like this should definitely be more noticed by many other players looking into the game, so my real rating for this game would be 4/5 stars because of the enjoyable parts. It's okay to have your own opinions as long as you have good reasons to feel a certain way about something, and that you can properly criticize something with much experience with the topic.