Do the questioner's previous statements and thoughts expel him from the fold of Islam, and is his repentance accepted despite his mockery of religion and its laws, and what is required of him for his repentance to be accepted?

I praise Allah for saving you from those delusions. Repentance erases what came before it. No matter how great the innovation (bid'ah) was, sincere repentance wipes it away and expiates it, even polytheism (shirk). Allah Almighty loves those who repent and rejoices at the repentance of His servant. Indeed, He may even transform the sins of the repentant into good deeds, seeing the sincerity of their repentance and the completeness of their return to Him. Therefore, you must have a good opinion of Allah and supplicate to Him to grant you sincere repentance. Whenever you regret and acknowledge the corruption of those beliefs and abandon them, your repentance is valid and accepted.