"This will have little impact on adoption," he said in an email to The Register. "The vast majority of developers get MongoDB software directly from MongoDB, and at times from Docker, Homebrew or similar repos.
True, it just won't be this engineer. AWS, make no mistake, is the 800# gorilla in the room when your target platform probably will be cloud as well as local. Clients aren't sure what platform they'll be using in the near, let alone far, future.