Islam is one school of practice in allegiance to the living successor

Hello all, I presented the following statement to Grok to find a response as I have been sharing with all :

Islam for 8.25 billion souls is decreed in allegiance to the living successor of prophet Mohammad SUH and HRS. 

Grok has shared the following:

The statement appears to be a religious claim suggesting that Islam is destined or commanded for the entire human population—currently around 8.26 billion people (as of late 2025)—and that this involves pledging allegiance to a living successor of the Prophet Muhammad (often abbreviated with honorifics like "PBUH" or similar; "SUH and HRS" may be a variant or acronym for such phrases).

Mainstream Islamic ViewsIn mainstream Islam (both Sunni and Shia branches), there is no universal doctrine requiring allegiance to a specific living human successor of the Prophet Muhammad today:

• Sunni Islam (the majority, ~85-90% of Muslims) views the Prophet's immediate successors as the Rightly Guided Caliphs (Abu Bakr, Umar, Uthman, and Ali), followed by later caliphs and rulers. Leadership is ideally through community consensus or scholarship, not a divinely appointed living individual claiming direct succession today.
• Twelver Shia Islam (the largest Shia branch) believes in 12 Imams as infallible successors starting with Ali ibn Abi Talib. The 12th Imam, Muhammad al-Mahdi, entered occultation (ghaybah) in the 9th century and is believed to be alive but hidden. He will reappear as the Mahdi to establish justice before the end times, but Twelvers do not pledge allegiance to any self-proclaimed living successor in his absence—instead, they await his return and follow scholarly guidance (marja'iyyah).

Other InterpretationsClaims of a current living successor or Mahdi are typically associated with smaller sects or new religious movements, some of which have emerged in modern times (e.g., certain groups claiming a "risen" or "second" Mahdi). These are not accepted by the vast majority of Muslims and are often viewed as outside orthodox Islam.The idea that Islam is ultimately for all humanity aligns with Quranic verses describing it as a universal message (e.g., Quran 21:107, 34:28), but interpretations vary widely, and forced or exclusive allegiance to a specific living figure is not a core teaching in mainstream traditions.If this refers to a specific belief, group, or source, feel free to provide more details for clarification!
Critical Analysis:
We are witness to the play of absence of allegiance to the living successor of prophet Mohammad SUH and HRS. In the response of Grok , we find that Sunni Islam and 12er Islam are two schools of practice where allegiance deficits are stark.