From https://join-lemmy.org/docs/users/02-media.html#images-and-video
Lemmy also allows sharing of images and videos. To upload an image, go to the Create post page and click the little image icon under the URL field. This allows you to select a local image. If you made a mistake, a popup message allows you to delete the image. The same image button also allows uploading of videos in .gif format. Instead of uploading a local file, you can also simply paste the URL of an image or video from another website.
Note that this functionality is not meant to share large images or videos, because that would require too many server resources. Instead, upload them on another platform like PeerTube or Pixelfed, and share the link on Lemmy.
That said, the more important thing I wanted to say was that you should report that officer. Here’s an infographic with state-specific hotline numbers to do so. See also https://www.usa.gov/voter-fraud
The rules text says it creates an area of darkness, and with your interpretation, it doesn’t, which means your interpretation is wrong. Yes, the ability could be written more clearly, but the logic for a reasonable way for it to function follows pretty cleanly. Your interpretation is not RAW or RAI.
There’s a reply on RPG StackExchange that covers a similar line of logic to what I wrote above.
Remember that Fifth Edition D&D is intentionally not written with the same exacting precision as games like M:tG. The game doesn’t have an explicit definition of magical darkness, but it’s pretty clear that the intent is for magical to trump mundane (when it comes to sources of light and darkness). Even the Specific Beats General section says that most of the exceptions to general rules are due to magic.