Mate, you've missed the bit saying...
Time on station has been a red herring for years, the area to focus on being "on station" LTA has never been any good at this, a twenty knot headwind reduces your speed of advance by 40%, and is likely to result, if prolonged for anytime, in the vehicle being as likely to be found in Alabama as Afghanistan. In the trophosphere the situation gets worse!
The problem is that airships are "draggy" which means they need lots of "oomph" to move them about - especially at speed. Lots of "oomph" equals lots of fuel and then also the cross-section of the airship means that it is more affected by winds than conventional aircraft. This all adds up, IMHO, that airships may have "the ability to sit in exactly the optimum spot for your task", but only in uber-light winds or still-air.
Finally, the author of the article tried his product doing exactly this - using his airships as "on station assets" for prolonged periods. He couldn't manage the claims that the program initially promised - hence his somewhat negative outlook for airships in this role. In fact, it was trying to achieve this goal that bankrupted his company as they couldn't get it to work.