[SR2Z]

The meaning of the word "efficiency" is highly contextual.

Operation Warp Speed rapidly developed and distributed a totally novel COVID vaccine to billions of people in just two years, but was extremely costly. Was that efficient?

The number of federal employees per American citizen has been shrinking for 80 years. Is that efficient, if it also leads to long waits for government visits?

The United States has not fought a peer state in war for decades - largely because billions of dollars are spent to build bombs that will spend their entire lives in a warehouse. Is that efficient?

Large organizations tend to operate the same way regardless of their ideology. The only real difference between government and private orgs is that one of them will fail faster under stress - and much like efficiency, whether that's good or bad depends on context.