When they say "more government", that doesn't mean that it actually employs more people. they are talking about more power/authority to the government.
I have no idea why they are selling, but imagine this. What if the controlling entity of Nat Geo wants to sell meaning it is not a hostile takeover, but the government says sorry, no deal (for whatever reason). Imagine if you owned a business and wanted to sell to the highest bidder, but the government steps in and says sorry, you have to sell to the lowest bidder because "we" think it is better. Do you really want that? Does that not open the door to abuse? I think it does.