Converting cameras to component is tricky because of a) the math involved b) the many places cameras are currently hardcoded in. Untangling everything is going to be a time-consuming task and you'd have to dig pretty deep in the ES way of doing things, not to mention you'd have to navigate the PR traffic - other PRs will affect the same area of the codebase you are modifying and you'll need to coordinate with other developers or adapt to their actions. So, I wouldn't underestimate the time it would take to deal with this task.
That been said, I understand your concern. Remember that these tasks are provided as guidance/suggestions. So, if you feel like this task is too short, you might want to pair it with something else or simply expand it. For example on top of converting cameras to components with the aim of having a single, component-based, active camera, you could go the whole way and work with me on the DAG pipelines to allow for multiple cameras rendering at the same time. I'd be surprised if this doesn't fill the whole summer.