I couldn't give a rat's behind what someone else is busy with. The manager , dev, project, should know if I'working on something affecting someone else's work...
The scrum meeting should be specific to you and/or your team. It's also a good thing to know what your company is up to. If you silo yourself, you're in for a big surprise when moving to a job that expects you to know how several systems work together. Each to his own I guess