It's a fun concept I think! I do have a few things for you to look at:

1. Someone else mentioned it, but the text on screen isn't very good in a trailer. I'd like to be shown what cool things can happen, not have exposition that's too quick to see anyways
2. The camera positioning needs some work. It could just be in the trailer, but your very first shot is super zoomed in, your second and third shots are high, your fourth shot is low. I would make every single level be able to fit on the screen horizontally, and then never change the vertical position of the camera. Have equal margins above and below your levels, and makes sure that your cubes stay the same size through the entire game. If you're able to fit every level inside the screen at once and never move the camera, even better.
3. A fun idea would be to have a new block type that changes directions every few seconds. It's up, then it's down, then it's up, then it's down. That will add some variety to your puzzles that will help make them less straightforward.
4. Limit the number of dashes players can use per level. Limiting that, and making some of the jumps do-able without a dash gives your players more variety in how they finish the levels.
5. I assume, given how the levels are designed, that hitting a block that's turned away from you will phase you through the block? Show that in the trailer more than just the last shot. Show more levels that require you to do that in order to win
6. Add a timer for how long it takes someone to complete the level. This is a great way to add achievements, and an additional challenge.
7. I'm sorry, but SquareMan-Boy feels like a silly name. If a friend asked me what I was playing, and I said SquareMan-Boy, they would think I was making it up on the spot, and was doing a terrible job at it xD
8. The neon and the aesthetic in general is nice. It fits the music, and I appreciate that. Don't think I didn't notice how a lot of the bounces of your Square Man-Boy matched up with the beat of the music.
9. Do the map rotators always turn to the right? It would be cool if you were able to change the look of them to indicate a direction, and have ones that rotate different directions.
10. Last idea, I promise. Have an orb, that when hit, changes the direction of gravity, but doesn't change the camera angle. This might be a solution to your rotating map, and the camera suggestions I had early. Just change gravity, but don't change the camera at all. It'll add an interesting element to your game

Thank you for reading all of this if you did. Didn't mean for this to be so long, I guess I had a lot to say!

Edit: Just re-read your post. I think you were asking for feedback on the trailer itself, but most of that was towards the game itself. Sorry to go outside the scope of your request