No, its not true. You act as if the majority of scholars believed in it and that isn't true at all.
How can one refute a point of mine if it is sahih Muslim that claims tahrif occurred? Either you admit sahih muslim is not a sahih book or you admit that tahrif occured.
السلام عليكم ورحمة الله وبركاته,
I wanted to share this quote that I find fascinating from ash-Shaykh al-Mufeed which he writes on page 52 of "Awaa'il al-Maqaalaat":
اتفقت الإمامية على وجوب الرجعة... واتفقوا على أن أئمة الضلال خالفوا في كثير من تأليف القرآن، وعدلوا فيه بموجب التنزيل وسنة النبي صلى الله عليه وآله وسلم، وأجمعت المعتزلة والخوارج والزيدية والمرجئة وأصحاب الحديث على خلاف الإمامية
"The Imamiyyah (12er Shias) agreed that doctrine of reincarnation (i.e. that certain people will be brought back to life; either to honor like the Messenger صلى الله عليه وسلم and his Aal al-Bayt رضي الله عنهم, or to humiliate them like most of the Companions رضي الله عنهم) ... they also agreed that the Imams of Misguidance (i.e. Abu Bakr, Umar and Uthman as well as the rest of the Companions who were involved in compiling the Qur'an) opposed how the Qur'an was put together, and they went against what is necessary from the Revelation and the Sunnah of the Prophet صلى الله عليه وسلم.
And the Mu'tazilah, Zaydiyah, Murji'ah, and the Companions of Hadeeth ALL came to a consensus opposing the Imaamiyyah."
This quote is interesting for several reasons:
1. I'll leave that they have an agreement on al-Raj'ah/Reincarnation of the dead Companions رضي الله عنهم speak for itself.
2. He refers to 3 of the most important Companions as Imams of Misguidance.
3. The Imamiyyah agrees that the Qur'an has been tampered with (after the Prophet صلى الله عليه وسلم's death).
4. EVERY other sect in Islam (including the Murji'ah and the Ahl al-Hadeeth, i.e. the Hanafis and the Shafi'ees, i.e. Ahl as-Sunnah) opposed the Shi'a on the issue of Tahreef.
5. The Zaydis also don't believei in Tahreef.
Remember, this is al-Mufeed who is like a Ghazaali or an Ibn Taymiyyah رحمهما الله for the Shi'a, and he admits that the 12ers believe in Tahrif and everyone else doesn't.
The average Shi'ee has to really think about this long and hard بارك الله فيكم; how come al-Mufeed confirms that the Sunnis believe the Qur'an has NOT been tampered with despite knowing all of the supposed ahadeeth that confirm tampering in Bukhari/Muslim?