Well,
20+ years ago when I got my 6pack & tow endorsement I already had 25 years of boating experience. Small sail boats to 45' powerboats and everything in between. Never owned a boat that size, but the LOA isn't the issue. Clearly they got an anchor out whether they drug it ashore or panicked in the breakers and dropped it (more likely).
I also know that area well. There are several reefs the furthest out being ~120' on the deep side. Heavy surf would crumble on the 2nd reef and wouldn't break until 1st reef. It's runs from ~90 on the back side to ~35 ish at front of the 1st reef. It would have been much calmer there, It's sand bottom but with enough scope they should have held. Unless they were running after a cold front and we haven't had a strong one yet, the surf there is going to be < 10'. Hell they would have snagged the 1st reef on the way in. They had time to get hooked up.
Also this was Delray beach not the Horn of Africa one call to Seatow or BoatUS and I would expect the response time to be <30 mins. Those boys sit in the inlets waiting.
But I wasn't there, I don't know the sea conditions, I don't know what equipment they did have at their disposal. But for damned sure they should have had more than 1 anchor and the ability to use it with out power or a cell phone!
https://www.usharbors.com/harbor/florida/delray-beach-icww-fl/map/
If it was rough out that makes it worse imho, If I'm running a boat in sporty conditions I'm keeping my distance from land. Maybe they were picking their way through an inlet and shit went sideways at the worst possible time IDK