Is Rin Tohsaka's Light Cone a Must-Have in Honkai Star Rail?

Rin Tohsaka's light cone, Flickering Stars, is available in Honkai Star Rail 4.4! But wait a minute! Only Erudition characters can really make this item shine. You might want to hold onto your Stellar Jade since other light cones can do just as well! So, why not save those pulls for her Eidolons instead?