There are 14 questions mentioning EAS, 82 questions mentioning "electrophilic substitution", and 48 questions mentioning "electrophilic aromatic substitution", adding up to nearly 150 questions, approximately as many as metallurgy or lewis-structure.
Currently, many of these are tagged "o-chem+reaction mech" or "o-chem+aromatic compounds". I think both of these are rather broad categories as "o-chem+reaction mech" can refer to hydroboration oxidation reaction of alkenes, which is not electrophilic aromatic substitution. Also, "o-chem+aromatic compounds" can simply refer to usual properties of phenol/aniline/etc. and not specifically about electrophilic aromatic substitution.