Yes, as part of a strategic shift in its business operations, Dropbox confirmed in January 2021 that they would be reducing their workforce by approximately 25%, equating to the loss of about 315 jobs. This move is part of their effort to focus more on being a distributed workforce, enabling them to hire talents from different parts of the world not previously accessible due to geographical constraints.
I am not sure where the number 500 is coming from as official announcements mention about 315 roles being eliminated. It’s possible the actual number might be different. I recommend checking the most recent official announcements or news sources for the most accurate information.