Muslims don't even agree with that.
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“And We brought forth iron wherein is mighty power (in matters of war), as well as many benefits for mankind, that Allaah may test who it is that will help Him (His religion) and His Messengers in the unseen”
[al-Hadeed 57:25]
So whoever deviates from the Book is to be brought back with iron, i.e. by force. Hence the soundness of the religion is based on the Qur’aan and the Sword. It was narrated that Jaabir ibn ‘Abd-Allaah (may Allaah be pleased with him) said: The Messenger of Allaah (peace and blessings of Allaah be upon him) commanded us to strike with this, meaning the sword, whoever turns away from this, meaning the Qur’aan.
Ibn al-Qayyim (may Allaah have mercy on him) said in al-Faroosiyyah (p.18):
Allaah sent him – meaning the Prophet (peace and blessings of Allaah be upon him) – with the guiding Book and the conquering sword, ahead of the Hour, so that Allaah alone would be worshipped with no partner or associate, and his provision was placed beneath the shade of his sword and spear. Allaah has established the religion of Islam with proof and evidence, and with the sword and spear, both together and inseparable.
This is some of the evidence from the Qur’aan and Sunnah. The evidence clearly indicates that the sword is one of the most important means that led to the spread of Islam.