Summoner wasn't ever really a "pure" summoner, meaning they only summon and have access to no other abilities. Like, classic and iconic summoners throughout the franchise like Yuna, Rydia, Eiko and Garnet were more White mages and Black mages with the ability to occasionally summon. This new iteration is the closest the mainline franchise will have to a pure summoner. Technically, Dissidia and NT Yuna could be called pure in the same way 6.0 is but I digress.