The Short Version
The claim inverts what Indonesian writing guides actually teach. Authoritative sources consistently describe pronouns like "ia" as tools to *reduce* monotony caused by repeating proper names — not as a source of monotony themselves. No credible source supports the specific recommendation to replace "ia" with the full name "R.A. Kartini" to improve readability; this contradicts standard Indonesian stylistic guidance. The proposed remedy runs counter to the very principle it claims to serve.