It wouldn't be so bad if the pillars didn't go down after 1.5 seconds of being on them. It gives the player barely any time to think about their next move. If you play it over and over you get used to how the game works. Therefore, it does take some skill, but it also relies on luck.
I keep coming back to this game because of the medals. My best score so far is 18. Because it has replayability to it, I'm not going to give you a bad score. Just know that there's a difference between challenging and making a game extremely frustrating just because you can. Your game is the latter in that statement.