Denouncing Innovations Is an Obligation
Shaikh Rabīʿ ibn Hādī Al-Madkhalī, may Allāh protect him, said:
What is obligatory upon this ummah and the scholars of this ummah is that they denounce every evil or despicable thing and not treat bidʿah lightly, ever. It’s not allowed to treat any bidʿah as a small matter; it must be denounced.
In fact, if people were being negligent about a sunnah, it’s from sincerity in wanting good for them that you make clear to them the virtue of this sunnah and that abandoning it could lead to abandoning things that are binding and obligatory in Islām.
Al-Majmūʿ: Sharḥ ʿAqīdah Al-Salaf, vol. 2, p. 309, as quoted by Shaikh Fawāz Al-Madkhalī. Twitter.com/fzmhm12121. 6 May 21.