Well I wouldn't get upset about that. Now that it's built, $700k/yr is an insanely cheap price to maintain such a strcture. Now e.g. SpaceX can use their Space Act agreement with NASA to use the facility at cost for testing their own engines. $700k/yr of taxpayer money to enable SpaceX et al to build better rockets is a good ongoing investment imho.
The article is a bit hyperbolic in that regard. The facility isn't closed down, it's just locked up because a locked door is cheaper than a security guard. No one is using it at the moment, but that doesn't mean it is not open for use.
Doesn't detract from the insanity of building the thing in the first place though.