Yeah, I could even buy the first part, I don't know archaeology and can't say which inferences about the society you can make based on the existence or absence

Yeah, I could even buy the first part, I don't know archaeology and can't say which inferences about the society you can make based on the existence or absence of grave goods in that era. But it's one thing to characterize the society of the time based on the totality of evidence, it's another to ascribe "merit and personal achievement" to one specific person.