Don't mind me, just typing some stuff out to clear my mind.

From a foundation of humanist, utilitarian ethics:

The only indisputable goal that should be prescribed to each intelligent entity is that of enjoying him- or her-self, and that enlightened self-interest is the only rational connection between that and goals related to helping others.

Each person's life can be best (to the best effect) directed with this single goal (enjoying the best life possible) in mind.

Whether anything supernatural exists is unproven. That which is claimed without evidence can be dismissed without evidence. So whether or not supernatural entities exist it's functionally best to act as though they don't. Faith is an exercise in wasted effort.

Therefore all spiritual pursuits directed outward -- toward helping some non-human entity -- are useless.

Therefore worshiping Cracky-chan as a goddess is useless unless

Olivia will make use of this worship to help others.

or

Olivia actually represents a supernatural entity, and this is proven.