What is your problem with Islam? Think about it

[Mister Agenda]

Does Allah forgive all who seek his forgiveness?

Yes.

That's a generous interpretation considering 'Allah pardons not that partners should be ascribed to him', 'those who believe, disbelieve, and believe again, Allah will not pardon them'. Awkward, considering you're supposed to 'despair not of the mercy of Allah, who forgives all sins'.

---

Whether the person believes the ad hoc explanation has nothing to do with whether it's an ad hoc explanation.

Can you explain the fallacy, usually it's when both don't believe in the premise, but one is arguing by it for sake of argument.

Usually ad hoc makes an explanation he himself doesn't believe in to argue a point in a fantasy what if conversation just for the sake of argument.
Whether the person believes the ad hoc explanation has nothing to do with whether it's an ad hoc explanation.
Can you explain the fallacy, usually it's when both don't believe in the premise, but one is arguing by it for sake of argument. An Ad Hoc fallacy is when a person gives an explanation for an event and the explanation is written or said as an argument for the event. When a person poses an explanation that is disputed by evidence the person has to resort to untestable answers to salvage their claim.

What is the Ad Hoc fallacy? - Quora

Belief is irrelevant. A person can be completely sincere and make this fallacy. For example, someone who has not doubt that there are no errors in the Koran runs across something in the Koran that seems to be in error, It's a contradiction. But they know the Koran can't contain any contradictions because it's perfect. They're in cognitive dissonance. They resolve it by thinking of an explanation that would account for the contradiction. It makes sense to them, and they accept it. But it's still ad hoc.