Listing is a considered process, detailed on a gov.uk website, and those of local authorities.
Plymouth Civic Centre was designed and built as part of Abercrombie's plan for rebuilding the city after Hitler had done his bit: its listing details are at:
https://historicengland.org.uk/listing/the-list/list-entry/1392038
It's recent development history is well-documented in its Wikipedia entry; and the local authority's plans and actions regarding Armada Way have gained much (if not complete?) published!
The tower block at Plymouth Station, known as Inter-City House has been recently repurposed as part of the University of Plymouth.
One could argue without end regarding whether Plymouth (or Coventry, or London's Docklands, or anywhere?) would be better without planning, or local government, or planners, or developers, ... you decide.
In UK, you have opportunity of a kind to have say if not your way next month, and you can contact and lobby your MP and Councillors at any time; and/or vent on RailForum!