If anything, difference in mind is a reason to read. I want to know what experiences the other person has had which contribute to their perspective. No less so in areas like technical writing where perspective may be less overt.
I thoroughly agree. What I'm disagreeing with is this being an indispensable reason for reading. There is nothing oxymoronic in reading e.g. the output of an LLM. (Plenty of bad writing contains something that makes it worth reading.)