My limited experience with Forest Service is that they were much the same org under Trump, but could not always say so publicly. Maybe that's wrong though.
For example, every jurisdictional pipeline project under the Obama admin was "delayed" in a manner that never had to be completed. (Not for the environment, but as a political favor to the railroads.)
Some departments or offices are less flexible in their discretion, as you suggest, but it only takes one out of dozens+ to drag their feet and effectively kill a project.
It has become a serious problem in the last ~20 years, especially as an avenue abused by lawfare type suits. All it takes is the government to not object to the suit, for which there is almost obligation of the executive to defend.