People on social media claimed the flag is copyrighted, but its Creative Commons license only restricts commercial use, which requires the designer’s permission.
Progress pride flag's copyright is Creative Commons
The progress pride flag is copyrighted, but only restricted for commercial use
How the Pride flag was designed - Design Week
The Wizard House — Yes, the Progress Pride flag is copyrighted.
LGBTQ+ Flags (U.S. National Park Service)
The Wizard House — Yes, the Progress Pride flag is copyrighted.
569 Progress Pride Flag Stock Photos - Free & Royalty-Free Stock Photos from Dreamstime
Sexuality Flags & LGBT+ Symbols: The Ultimate Pride Guide
53,400+ Pride Flag Stock Photos, Pictures & Royalty-Free Images - iStock