Disclaimer: The article linked is from a single source with a single perspective. Make sure to cross-check information against multiple sources to get a comprehensive view on the situation.

Here is the same story with a bit of the details corrected from a reasonably legitimate source: www.jpost.com/israel-news/article-845865

Basically a bit over a year before the attack the IDF shifted patrols further away from the fence for fear of kidnappings. The IDF assessed the risk of a serious penetration had decreased while the risk of a soldier grab had increased. The IDF’s threat assessment was wrong of course. Nothing happened that morning.

As for the Golani most of them weren’t near Gaza. Some were and there was a notable engagement on Zikim Beach. Basically Hamas had taken out Gazan Command and Control, the troops weren’t sure what to do and surrendered beach territory to incoming speed boats (timesofisrael.com/in-massive-failure-troops-aband…).

So yes this story is a fake.