The original latin hustle as taught in the 70s ( I attended the 1st Prof only mini congress in Fla) the "dance " was agreed upon, from structural point, was very close to WCS, and a " Tap" was the commencing movement as in Tap step in place for man and lady then moving into a horizontal plane ( a coaster ).
So.. what you are seeing today, is a version that makes false claims in name.
Re vamping original dance forms. is invariably a marketing tool. This has happened in Mambo ( to salsa ) and T/Arg has more styles than I can count.
Even Bachata ,has now become re organised. A
nd do you not realise that, ALL the Intern style BR dances, bare little resemblance to the originals