Photography
Every photograph in the demo is stock, and it is here to show the layout rather than to be reused. Replace the files in src/assets/images with your own before the site goes anywhere public; the theme names each image after its source file, so swapping one is a matter of replacing the file. If you want to keep a demo image, check its terms at the source first.
Video
The footage behind the "Behind the Scenes" band is stock and carries the same caveat as the photography. It lives in public/videos and is loaded only after the page is idle, so removing it breaks nothing: the poster frame stands in for it.
Icons
Two icon faces ship with the theme, both subset to the handful of glyphs the pages actually draw. Material Icons is under the Apache License 2.0; Icofont is under its own free license. Both allow commercial use.
Fonts
Saira and Orbitron are served from the theme rather than from a font CDN, so a build stays reproducible offline. Both are under the SIL Open Font License, which allows use in a commercial product and redistribution with it.
The theme itself
The markup, styles and scripts are licensed to you under the terms in LICENSE.md at the root of the repository. In short: build as many sites as you like with it, including for clients, and do not resell it as a template.