if i could put a point on it, it would be the implied entitlement and absence of gratitude. Sure, this architecture is not 100% efficient. But step back for a moment, take a breath and consider the number of human-hours spent to get it where it is today. Consider how many people are busting their humps, many volunteers, to keep improving it. We arw not _owed_ any of this. Just the miracle of elastic server config and multicore processors... Buying into the pessimistic viewpoint is dangerous: When these issues get improved, will we feel grateful and adequate? or will we find new flaws and get snarky about them?
Anyway, what i do really like abt this post is it shows the chain of technical details across the call chain. it connects together info on dozens of man pages, etc. I also appreciate how it points out the inefficiency is quite convenient for service providers.