Understanding the project, getting the proper feedback from the stakeholders and task owners, working with them to understand what a realistic timeline is so they can predict a realistic completion date is LITERALLY their job.
Getting it wrong once or twice is expected, but even then their predictions are not supposed to be YEARS off.
CIG has missed several, and are years behind the schedule they set a while ago.
Their project management is terrible.
Calling project management due dates a "best guess estimate" is woefully understating the amount of work, effort and skill it is actually SUPPOSED to take to get to that information and create those timelines. It's not JUST best guess, because admittedly some of it will be when you're working with the unknown, BUT the lion's share of the work is stuff that has understood amounts of work and hours involved so can usually be reliably predicted UNLESS the project is constantly being updated and priorities changing and workload being shifted, etc... all of which is BAD project management.So while he can still do best estimates in a company in which the core focus is to develop the technology that will allow them to make the game they want that they will not compromise that for the sake of keeping a "best guess estimate".
Setting priorities appropriately so that the project isn't constantly getting rearranged is also part of project management. If CIG is doing this, that's another testament to how bad they are at it.