I will have to disagree with one of the comments. The landing page does indeed look similar, however that doesn't stop many companies in reusing bootstrap, material ui typical interfaces, color schemes and the layout as it used as a standard.
The major thing is that functionality is different, the star background and the use of to what I call material UI cards is absolutely fine and acceptable. Nearly every 2nd crypto project use 'connected nodes' background - try blame them for that:)
Finally, the author did it as a side project for learning and it seems to be totally free.
And yeah - Good artists copy. great artists steal