Thanks, I have submited my feedback in developer survey.
Please consider my feedback. I strongly think workers and pages deserve their own space, at least in a submenu in the dashboard sidebar. Then it will be easy to manage, and there will be a separation of concerns.
I agree with @shyjal, as Pages and Workers will often be used for different purposes, and may even be of interest to, or the responsibility of, different teams within an organisation, so having them separated in the UI was actually a positive thing.
Ultimately, it makes a lot of sense to merge them due to the significant overlap in functionality, but just combining the UI like this may be a little jarring for some existing users, and being able to opt-in to the new UI, making it a config option with a default of the old presentation, or maybe even just implementing a simple filter at the top of the page (the existing separate menu items could then be kept, with each defaulting to different filter settings), might have been better approaches.