In 2021, Instagram stopped promoting content with a TikTok watermark (or any watermark) on videos. Last August, YouTube started including a logo-based watermark on downloaded Shorts - the company’s short video product - to discourage cross-platform sharing.
Notably, Instagram has always allowed users to download their own Reels without a watermark from drafts. TikTok uses a similar format to attach a watermark on downloaded videos. While Mosseri didn’t specify if there will be a watermark on the downloaded Reel, the picture posted by him indicates that the downloaded video will show an Instagram logo along with the account name. Plus, public accounts can turn off the ability to download Reels. Mosseri noted that Reels from only public accounts are eligible for download.