Given how the number of times a chemist's abilities can be used is limited only by availability of components and the time it takes to concoct new brews, while a wizard or sorcerer can only disintegrate things a couple of times per day, I would not consider this that big a drawback.
A wizard gets Scribe scroll for free... don't know how significant you consider the XP costs... for really spamming it an Arcanist can even take the Craft Wand feat.