Yes, the content seems to be true and authentic, as reported by several sources.

These, include:

1. [1] https://www.ripl.com/post-1/social-media-advent-calendar - (Trust Score 7/10)

- The article discusses how social media advent calendars can help create interesting content and increase customer engagement during the holiday season.

2. [2] https://playable.com/blog/advent-calendar-marketing-examples/ - (Trust Score 8/10)

- This article provides real-world examples of how companies have utilized advent calendars to solve distinct marketing challenges, highlighting their effectiveness in boosting brand awareness and engagement.

3. [4] https://www.fastcompany.com/91235924/sephora-viral-advent-calendar-flop-shows-how-trend-can-backfire - (Trust Score 8/10)

- The article discusses how Sephora's advent calendar backfired on the brand, highlighting the potential for negative social media backlash against advent calendars that fail to meet consumer expectations.

These sources collectively support the idea that social media has contributed to the seasonal unboxing trend of advent calendars, both positively and negatively.