"Molestar" is a verb that express a feeling, therefore the sentence is a subjective statement, and not objective. Almost as you say, because it´s not a fact, but a personal issue. These verbs are called in Spanish "verbos de sentimiento", verbs that express feelings, and includes "aburrir, alegrarse, apetecer, aprobar, encantar, disgustar, entristecer, gustar, lamentar" and many others.