I don't think your link shows what you think it shows.
Were some campsites closed temporarily? Yes. Were they all closed due to cuts? Not even close.
The first one listed is Great Smokey Mountain Park. I put in dates for early June and every campsite was available.
Great Smoky Mountains National Park, Tennessee - Recreation.gov
Arches National Park has
all kinds of tours available and the Fiery Furnce is giving out permits:
Fiery Furnace Permits - Arches National Park (U.S. National Park Service)
Black Canyon of the Gunnison National Park, according to their calendar, has events every single day between now and October when they close for the winter.
Special Events and Ranger Programs - Black Canyon Of The Gunnison National Park (U.S. National Park Service)
I could go on, but probably don't need to.
My life experience has nothing to do with it. I'm just asking if there have been reports of any serious issues?