Thomas Shey
Legend
0D&D was a wargame. After it was created, it was also called an RPG, a category invented for it, and since then many more RPGs have been created, and the category is huge, the definition expansive, and few games today called TTRPGs, share the with 0D&D, the qualities that made it a wargame. Likewise, very few of 0D&D's fellow wargames could be called RPGs, even in retrospect, in spite of sharing many qualities with it.
I think your assumption few could not still be called wargames is not well supported. There are enough games with combat engines that can't be called anything else if viewed just in and of themselves.