> reporting what has been understood still influences meaning. Choice of inclusion moderates spread; definitions are inherently lossy and cannot capture the whole range of nuance; the compiler's understanding can be inaccurate.
I agree and actually had a sentence in the GP that said it, but removed it because it was getting too long. An important point. Also, the Oxford English Dictionary intends to be descriptive and says so, but many readers won't understand that and take it as prescriptive.
> OED no less "represents the understandings of a few editors of unknown knowledge" than Wikipedia does.
The knowledge of OED editors is not unknown but well known and exceptional - the world's leading lexicographers, with the best training and decades of experience. The resources are exceptional: top-notch professional lexicographers, domain experts, databases, teams of volunteers reading and contributing, etc. The definitions are not based on the contemporary understanding of a few people but on over a century of accumulated research, back to the beginning of English, and the understandings of those people, plus it depends on the input of domain experts, editors, etc.
I'm not knocking Wikipedia, which has its value, and the OED is, like every human institution, limited. But beyond that general statement, the quoted sentence doesn't describe the OED at all.