Erroneous reversion

I disagree. Wiktionary should be accessible to everyone, so we should use the forms of speech that are accessible to many people. That means we should avoid using formal language and use plain, everyday straightforward neutral-tone language. whom is distinctly formal and archaising in tone, and therefore not appropriate.

As for what is "correct", this is not a concern of Wiktionary because we only describe language, not prescribe. As far as Wiktionary is concerned, who is always ok to use, because that's what people actually use.

It might not be used by everybody, but it is still used in formal contexts. However, I do agree with you somehow, and if we are to use "who" instead of "whom" in this context, then so be it.

I've started a discussion about it here. Please join in!