السلام عليكم ورحمة الله وبركاته
With due respect to Shaikh @Assimalhakeem (Twitter handle). Shaikh please stop teaching sensitive issues in one-two liner paragraphs. There are acts of Kufr Al-Akbar (Major disbelief) that which if a person does, even without conviction, he will exit Islam.
For example. If someone clearly mocks the religion or its aspects, and does it with or without conviction of Kufr, it is still Kufr Al-Akbar.
Sh. As-Saeedan says in the video below, ‘If someone says that to do Takfeer of the one prostrating to an idol (without compulsion),he needs to do Istihlal (believe it is permissible in his heart),then such a person is a Murji’, because there is no Istihlal required in matters that are Kufr bi-Dhatihi (Kufr in and of themselves).’ (See from 15:00 mins onwards)
Thus, if an action is Kufr Al-Akbar, by itself, even if one does it without conviction, without being compelled or forced (Ijbar), then it is Kufr Al-Akbar itself.
Note: The Murjiyah, were/are a deviant sect who restricted Imaan only to belief in the heart and statement of the tongue, such that if anyone did an act of disobedience externally, they believed that it didn’t harm his inner Imaan.
Read more here:
https://abdurrahman.org/2012/03/11/what-are-the-types-of-murjiah-shaykh-saalih-al-fawzaan/
Also, if an act of Kufr Al-Akbar is ‘done without conviction’ (as you said), you’ve to at least clarify when it would be excusable & when it would be a major sin that needs repentance.
This post in no way means to belittle Shaikh Assim Al-Hakeem, may Allah preserve him and rectify our mistakes and errors.
(Added benefit by @aasif__javid)
From the benefits Shaikh Fawzaan حفظه الله derived from these two verse (pic) about mocking the deen :
1. The one who commits kufr (disbelief) and claims he did not know it is kufr isn’t excused for that.
Note: This is about المسائل الظاهرة
2. The one who utters a statements of kufr (disbelief) becomes a disbeliever even if he does not believe in his heart what he said (with his tongue).
– الملخص في شرح كتاب التوحيد
-End of note.
Saheehus-Seerah 