Direct answer
What is meant here is not an independent judgment on the story in all its implications, but the attribution to Shahrur of a reading that makes the ending of legal adoption the central point of the incident. This attribution needs to be checked against the original episode, because the available evidence is an undocumented paraphrase rather than a verbatim quotation.
What is attributed to Shahrur
The available paraphrase from the episode page states that Shahrur reads the incident of Zayd as ending legal adoption, so that no claimed sons remain in society. Within the limits of the evidence, this is the only substantiated claim.
Atlas explanation
The Atlas understands from this wording that the focus of the reading is adoption as a legal designation, rather than merely recounting the incident. This explanation does not add any judgment concerning care, lineage, or other effects, because no detailed, documented text is available in the material at hand.
Conclusion
Establishing that the reading focuses on ending adoption does not require settling all the other purposes of the story; the available material establishes one focus attributed to Shahrur and does not establish that the meaning is confined to it.
Open question and limits
Did Shahrur state in the original episode that the story was not meant to honor the Prophet? This record does not allow a definitive answer, because the quotation field and the raw context are empty, and the evidence is classified as “unconfirmed from the original source.” Nor can this record alone establish details about the effects of adoption or his position on care and solidarity. See Episode 30, while retaining the existing book connection: Towards New Foundations for Islamic Jurisprudence.