4 blocks for the so many trackers and possible ads on their website. Yes it may be because of the youtube player that they embedded but is worth mentioning. They could use the trade free archive.org ro host and embed their videos.

Here too, I want to mention that the website (https://web.powder.media/) uses trackers and ads (googleads.g.doubleclick.net), likely because of the embedded youtube video where they explain how it works. But powder web itself seems to be 100% trade-free, because of no ads and no trackers. You can create an user account to share your media library with friends and family but you don’t have to create an account.