Because those people (so called scholars and speakers) are simply not aware of Fatawa Ridawiyya or other Sunni books of masters. I challenge you, conduct an open book open software (with search function) exam on Fatawa Ridawiyya for all these people and see the results for yourself! Most so called Sunnis in our times are just cashing in on Ala Hazrat's name, his salam, and the slogan of "Maslake Ala Hazrat". There's nothing more to it than this.
According to this principle of the Quran, why did people insist on wretched meanings from a known Sunni who has spent his life defending Sunni creed? اس قرآنی حکم کے خلاف جلالی صاحب کے محتمل الفاظ کو معنی خبیث پر کیوں محمول کیا گیا؟ جبکہ آپ نے ساری زندگی سنی عقائد کا دفاع کیا ہے۔۔۔
Alahazrat writes: یہاں یہ نکتہ بھی یاد رہے کہ بعض محتمل لفظ جب کسی مقبول سے صادر ہوں بحکم قرآن انہیں معنی حسن پر حمل کریں گے، اور جب کسی مردود سے صادر ہوں جو صریح تو ہینیں کرچکا ہو تو اس کی خبیث عادت کی بنا پر معنی خبیث ہی مفہوم ہوں گے کہ:کل اناء یترشح بما فیہ صرح بہ الامام ابن حجر المکی رحمۃ اﷲ تعالی ۔ 'Here, this point must also be remembered that when some ambiguous words are spoken by a righteous person, according to the Quranic ruling, they will accorded a good meaning, whereas if they are spoken by a rejected person, who has uttered explicit insults previously, then due to his filthy habit, only wretched meanings will be applied, as: Each vessel only pours out what's inside it. Imam ibn Hajar Makki has explicated this.' (Fatawa Ridawiyyah, 29:224)