In general I’d agree with x-ray vision. Islam definitely condemns unbelievers to hell. The only question being just who would be so classified. At it’s broadest all Muslims, plus all ‘People of the Book’/monotheists ( variously defined - usually Christians, Jews, Sabeans and Zoroastrians, but also on occasion throughout history others ) are saved:
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Those who believe (in the Qur’an), and those who follow the Jewish (scriptures), and the Christians and the Sabians,- any who believe in Allah and the Last Day, and work righteousness, shall have their reward with their Lord; on them shall be no fear, nor shall they grieve.
However many believe that passage was abrogated by this one:
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If anyone desires a religion other than Islam (submission to Allah), never will it be accepted of him; and in the Hereafter He will be in the ranks of those who have lost (All spiritual good).
Then again not all Muslims believe in the abrogation of verses and not all believers in abrogation think the above abrogation is correct ( including a couple of writers way back in the 8th century ). The number of verses abrogated in the Qur’an ranges from zero to ~500 depending who you talk to ;).
Even beyond that, some Muslims believe all rival sects of Islam are gonna burn as well, based on this hadith, supposedly narrated by Muhammed ( note this one is also variously interpreted ):
“Indeed the people of the Book before you split into seventy-two sects. And this nation will split into seventy-three sects, seventy-two are in the Fire and one in Paradise”. And in another narration, “All are in the Fire except one.” It was asked: Who is that one? He replied, “That which I and my Companions are upon”
So in Islam ( as with Christianity ) you can take a view from the very broad to extremely narrow or various points in between. But it certainly seems somebody is gonna take it in the shorts in the afterlife.