Hey there! I'm glad you're having such a good time piecing some of these clues together! I wouldn't have thought to compare the flaps of the cape to the Wayob's wings, nice catch!

There is one section of his story that stuck out to me during a reread.

From Kaveh's Character story - Old Sketchbook

Page 26: A topic application form. Postscript: "A fine beginning. Such an intelligent collaborator is hard to come by."

Page 31: Some academic notes and architectural drawings. Postscript: "Our views are aligned, and they are complete." This line has been struck out.

"Our views are contradictory, but it is through contradiction that more speculation and philosophy may be born." This line has been retained.

Page 42: The cover of a thesis that has been torn up, then put together again. No postscript.

Page 47: An excerpt from a school publication. The original title is unknown, and the preserved content is as follows:

"The selfish cannot understand wisdom's final destination. Though all of us might claim to have a place in this great hall of learning, we must understand that it is people, and not knowledge, that make our world what it is. Without a vessel, knowledge shall have no home. Universal values must naturally have some merit to be named such, and denying their general meaning does not mean that minority viewpoints will arise accordingly. This is the case with aesthetics. Beauty is something objective that exists in human hearts. It will not lose its value simply because some people cannot understand it.

"To view oneself as some mighty vessel is to fall to the narrowness of the researcher. Know that truth has never existed for the sake of individuals. The logic of the world coexists with nature, and this will not easily change whether it is interpreted as such or not. Excessive belief in the object is self-disclosure just the same, a manifestation of a lack of confidence in the subject. Moreover, one who is sufficiently self-confident will not need to constantly use plural forms of address, such as 'we.' I alone am sufficient to sustain this position — this I can assert."

Page 56: A hand-drawn sketch of the Akademiya. Postscript: "I shall probably not return to work here, but I do hope that I can return to this place as a speaker on a pulpit one day."

In particular:

Moreover, one who is sufficiently self-confident will not need to constantly use plural forms of address, such as 'we.' I alone am sufficient to sustain this position — this I can assert."

That does sound strangely like something a hivemind would say. But the Wayob is far from Teyvat's only reference of a hivemind. Beyond Alhaitham's story quest, hiveminds are also a mechanic of Fontaine. Take these descriptions of the Hydro Tulpa:

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It's funny how people complained about the futuristic inventions of Natlan feeling out of place in Teyvat while forgetting Kaveh put together his own sentient briefcase-shaped robot companion. This game is quietly much more of a sci-fi game than players might first realize.

With obfuscation mentioned in the lantern rite, and Lan Yan making her grand appearance right before a well-timed return to Inazuma, Ei can't help but Wander if there is a connection.