AJ Picket does a great job of lore for D&D. With the new changes to the terms from D&D, he's only doing the open source license covered material now and is no longer covering protected D&D content. He's even building an open source RPG product. As a DM, his content is key for my prep, especially listing out dragon magazines or older edition content to use for building a campaign.
I watched that video, and liked it. AJ has shared tons of D&D lore, for years now. They will definitely notice his public statement. AJ told them to F off.