I heard the reason why the Rahkshi of Hunger can't drain light like the Avsa is because they'd literally die if they tried to absorb light given the Rahkshi's natural vulnerability to light.
@@amajanuitales I'd also like to add that the reason why Vamprah could use the Avsa to drain light was because the Kanohi itself was absorbing it and not the Makuta themselves so yeah, glad you think its probable tho!