Before takfir can be established, all conditions must be fulfilled and all impediments removed, and this includes the adhir/excuse which seems to be negated completely.
From the conditions of making takfir are:
Deliberate action or saying of kufr, and its acceptance.
This implies determining whether the person knows his action is kufr, and he has chosen it, without being compelled. Moreover, it must be shown that the person was deliberate in his action and is content with it.
From the impediments of takfir are:
Affirmation of an error.
Ahlul Sunnah checks into both the impediments and conditions before pronouncing takfir on a specific person. … More EXCUSE HIS KUFR AND TAKFIR EXPLAINED – ‘AUDHR BI AL-JAHL’ – EXCUSE OF IGNORANCE RULINGS & FIQH