The question arises because the actual (METAR) states visibility of 2km and RVR's of 1700m - that's not "thick fog". It's misty (BR) but not foggy (FG). The cloudbase is more problematic - SCT/BKN at 100'.
If the quote came from an airport spokesperson that may explain it. Alternatively, it may be the journo try to add more drama/"shock horror" to the article.
Tom, you obviously have an agenda/interest on GLS/GBAS - it will come (eventually) but is going to require a huge amount of testing before airlines and crews are prepared to carryout CAT IIIB 75m Autolands. The fact is that ILS,despite it's limitations, has been used for decades and is used 10,000's times EVERY DAY perfectly safely. I would be very surprised if this event at LFLL has anything to do with ground equipment.
A4