I agree with 99% of your reply, but this one key part:

our government is actually set up in such a way that radical sweeping changes aren’t possible.

The following is from the PDF hosted on the Project 2025 website:

Aggressive Approach to Senate-Confirmed Leadership Positions. While Senate confirmation is a constitutionally necessary requirement for appointing agency leadership, the next Administration may need to take a novel approach to the confirmations process to ensure an adequate and rapid transition. For example, the next Administration arguably should place its nominees for key positions into similar positions as “actings” (for example, putting in a person to serve as the Senior Official Performing the Duties of the Commissioner of CBP while that person is going through the confirmation process to direct ICE or become the Secretary). This approach would both guarantee implementation of the Day One agenda and equip the department for potential emergency situations while still honoring the confirmation requirement. The department should also look to remove lower-level but nevertheless important positions that currently require Senate confirmation from the confirmation requirement, although this effort would require legislation (and might also be mooted in the event of legisla- tion that closes portions of the department that currently have Senate-confirmed leadership).

If you get the right people in the right positions to do enough damage in a short timeframe, it becomes “Shoot first, ask questions later”