I think seeing superiority or obnoxiousness in the comment you replied to was a pretty large reading error on your part. The tone was sympathetic to people whose inboxes receive more than they can handle.
The last sentence of your comment sounds quite condescending.
The part of their comment I quoted is not particularly subtle in my opinion. It undercuts the superficially "sympathetic" tone. If they actually intended it to be sympathetic they should be more careful in their phrasing. I'm skeptical.
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>The tone was sympathetic to people whose inboxes receive more than they can handle.
But categorization doesn't reduce volume of received messages and it remains more than they can handle.