The caste reservation system has been pivotal in bringing social issues faced by the lower castes to mainstream politics. Only when some lower caste members made it up the social ladder through reservations, were they able to articulate their issues and lend a helping hand to others in their social groups.
> For example, it will favor children of low caste individual who already benefitted from the system and is at economically very priviledged position over children of a high caste individual who are economically disadvantaged.
Economics does play a certain part in social dynamics. But social advantages trump any economic disadvantages. Even though a lower-caste member might be in an economically advantageous situation, they are still subject to the social dynamics, put in place by the upper echelons of the hierarchy, that are antagonistic to their upliftment. This justifies caste-reservation so that we, as a humanitarian society, can lift up everybody.