What is the word you direct to those who disparage العلامة (the scholar) Yusuf al-Qaradawi, Sayyid Qutb, and other figures of Islamic Da'wah (call/preaching)?

Given the proliferation of those who speak on matters of religion, it is imperative to respect the people of knowledge and acknowledge their rightful status, avoiding any disparagement of them. Every person's words can be accepted or rejected, except for the infallible one, peace be upon him. When an error is observed in a scholar, advice should be offered, not defamation. Disagreement is a universal law, and scholars have disagreed while upholding ethical conduct. People are divided in their attitudes towards scholars: some exaggerate in their praise, while others seek out their faults; the truth lies in the middle. Scholars who issue fatwas are of two types: one whose correctness mostly prevails, so their words are accepted unless they contradict evidence; and another whose statements are subjected to scrutiny against evidence before being adopted.