Answer: This is not Wasatiyyah. This is extremism. Al-Wasatiyyah is to accept the Haqq (truth) and to refute Baatil (Falsehood).This is Al-Wasatiyyah: اهدنا الصراط المستقيم ‘Guide us to the Siraat-al-Mustaqeem (Straight Path).’ [Al-Fatihah 1:6], Siraat of whom? Of ‘those on whom You have bestowed Your Grace’. [Al-Fatihah 1:7]. Those whom Allaah has bestowed His grace are those whom Allaah has mentioned:
فَأُوْلَـئِكَ مَعَ الَّذِينَ أَنْعَمَ اللّهُ عَلَيْهِم مِّنَ النَّبِيِّينَ وَالصِّدِّيقِينَ وَالشُّهَدَاء وَالصَّالِحِينَ وَحَسُنَ أُولَـئِكَ رَفِيقًا
‘then they will be in the company of those on whom Allaah has bestowed His Grace, of the Prophets, the Siddiqin, the martyrs, and the righteous. And how excellent these companions are! [An-Nisa 4:69].
This is Al-Wasatiyyah. And as for refuting the opponents this is an obligatory matter. Allaah refuted the Kuffar, the Mushrikeen and the Munafiqeen in the Quran. And likewise the Messenger (sallallaahu ‘alaihi wasallam) refuted them in his Sunnah. And the Imams refuted the liars. So it is obligatory to clarify the Baatil (falsehood) and to refute Ahlul-Baatil (people of falsehood). And this is not from extremism or radicalism or terrorism as they say. Rather this is from the clarification of the Haqq (truth).
وَإِذَ أَخَذَ اللّهُ مِيثَاقَ الَّذِينَ أُوتُواْ الْكِتَابَ لَتُبَيِّنُنَّهُ لِلنَّاسِ وَلاَ تَكْتُمُونَهُ
‘(And remember) when Allaah took a covenant from those who were given the Book to make it known and clarify to mankind, and not to hide it.’ [Aali Imran 3:187]
إِنَّ الَّذِينَ يَكْتُمُونَ مَا أَنزَلْنَا مِنَ الْبَيِّنَاتِ وَالْهُدَى مِن بَعْدِ مَا بَيَّنَّاهُ لِلنَّاسِ فِي الْكِتَابِ أُولَـئِكَ يَلعَنُهُمُ اللّهُ وَيَلْعَنُهُمُ اللَّاعِنُونَ
Verily, those who conceal the clear proofs, evidences and the guidance, which We have sent down, after We have made it clear for the people in the Book, they are the ones cursed by Allaah and cursed by the cursers. [Al-Baqarah 2:159]
So it is required to clarify and refute falsehood and uphold the truth. This is a must. Yes.