It has been mentioned that their first "hit" was below the level of the runway threshold.
Even if they decided to push their luck and descend a little below minima (say 200' rather than 300' QFE) this would not result in what happened.
Either these guys have knowingly descended to ,at or even below, the level of the runway without the required visual reference (or they "thought" they saw the R/W lights ) . . which seems insane in its criminal ineptitude, and therefore scarcely believable to any professional pilot OR. . . . . . they didn't realise how near the ground they were, which means no-one was looking at the altimeter (again scarcely believable)
OR . . it was incorrectly set.
Even if they set the wrong (too low) minima, or decided to bust them "a bit" they wouldn't manage to hit the ground BELOW the height of the R/W without some other mistake.