The Quran mentions that after Satan was commanded to leave the Heavens due to his disobedience, he said to Allah that just as He had misled Satan, he too shall lead humans astray (Surah 15:32-44).
1. What made Satan say this? Since the whole episode doesn't show Satan being misled anywhere. You could say Satan made this up, but that doesn't sound quite right, since Satan was well aware of what had happened. Allah created Satan and Satan knew this very well. Still Satan decided to go against his creator.
2. Satan knew very well he couldn't win from Allah, still he asked for respite till the Day of Judgment. Why doesn't Satan simply repent? He'll be on the losing side on the Day of Judgment. You might say it is Satan's kibr (pride) that prevents him from repenting. But no matter how proud or powerful he might be, he is still merely a creation and Allah is the creator. So what is the point, why fight a lost cause?
3. The Quran at various stages calls the non-believers and hypocrites as deaf, dumb and blind. [Surah 2:18] It is understandable that the non-believers due to their stubbornness were unable to understand or recognize the message of Allah. But labeling them as deaf, dumb and blind is demeaning to the people who are deaf, dumb or blind. Yes we humans do call normal people as deaf dumb or blind but all those meanings are negative. The deaf/dumb/blind are also creations of Allah and they did not choose to be so while the non-believers chose not to believe.
There might be many deaf/dumb/blind who are Muslims and might wonder why Allah likened the non-believers to them. This might be similar to if someone likens criminals to a certain race. Such a statement might deeply hurt the race.