Barbarian class can cast spells as rituals, is enough for attunement requirement of wands?

@AndrewF_WriterBarbarian class can cast spells as rituals. Player insists this is enough for “Spellcaster” attunement requirement of wands. ??? no, requires spellcaster class feature #wotcstaff

— (((Mike Mearls))) (@mikemearls) October 24, 2016