If anything, if the date that the original post could be placed beside it when viewing threads, it would provide a mechanism to allow the reader to decide if they want to delve into an old post that someone recently updated.

When replying we already see this:

In reply to Re^2: Do we ever want to freeze threads? by stevieb
in thread Do we ever want to freeze threads? by talexb

I think just appending a loud (bold, standout colour) "which is more than n years old" to each of those where appropriate should be flag enough.

Readers (as opposed to commenters) probably don't overly care about the age of posts and if ever they do, the ages are easy to find as it is.

🦛

In reply to Re^3: Do we ever want to freeze threads? by hippo
in thread Do we ever want to freeze threads? by talexb

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