Why did Allah not use simpler language in the Holy Qur'an, such as His saying, "Allah is the best of schemers," to spare people from misguidance?

Such a question is not appropriate to pose, because the Qur’an was revealed in the language of the Arabs. The fault lies in the corruption of some people's tastes or their remoteness from the language, not in the Qur’an. That is why such objections were not raised by the disbelievers of Quraish or others, due to their complete knowledge of the language. The remedy for this is to understand the Arabic language and learn its arts.