Is it possible to comment on what is being raised about Salafism regarding their rejection of the madhhabs and their direct derivation of rulings from the Qur'an and Sunnah?

The summary of the answer is as follows:

Calling upon scholars to adhere to the Qur’an and Sunnah and avoid fanaticism towards specific madhhabs does not mean shunning the study of madhhab books. Rather, it is based on four principles:

1. The sayings of the scholars of the madhhabs are not evidence in themselves; rather, they can be accepted or rejected, except for the saying of the Messenger of Allah, peace and blessings be upon him.

2. The truth is not confined to the four madhhabs; rather, it is what conforms to the religious text and evidence.

3. Seeking sound evidence is obligatory for those capable of it, while the incapable must follow someone whose knowledge and piety they trust.

4. It is essential for a scholar or a student of knowledge to be acquainted with the madhhabs of the people of knowledge to understand points of agreement and disagreement, avoid anomalies, and benefit from their efforts in collecting and prioritizing evidence, especially in matters for which there is no explicit text.