In Kolbe's reaction,instead of phenol,the phenoxide ion is treated with carbon dioxide. Why?

(N/A) The phenoxide ion is more reactive than phenol towards electrophilic aromatic substitution. This is because the $-O^-$ group is a stronger electron-donating group than the $-OH$ group due to the presence of a full negative charge,which increases the electron density on the benzene ring. Consequently,the ring becomes more nucleophilic,facilitating the attack of $CO_2$,which is a weak electrophile.