Can ご存じです function as a transitive verb?


I recently got an automated email from Twitter with the following subject
(except with real user names):

> username さん、username さん、username さんをご存じですか?

My question is about `を` paired with `ご存じですか`. As I understand it, `を`
normally marks the direct object of a verb. Therefore, I expect it to be
followed by a transitive verb; if there is no verb, I expect one to be
implied. However, this sentence ends with a noun and copula instead, so I
can't make grammatical sense of it.

I assume this phrase _is_ grammatical, as I got it in an email that was likely
to be proofread, and I can find [plenty of uses
online](https://www.google.com/search?hl=ja&q=%22%E3%82%92%E3%81%94%E5%AD%98%E3%81%98%E3%81%A7%E3%81%99%E3%81%8B%22)
on websites that I think are likely to contain standard Japanese.

So how does it work grammatically? The only explanation I can come up with is
that `ご存じです` is functioning as a transitive verb, like a polite/honorific form
of `存じる`. Is there a better explanation?




ご存じです is an irregular honorific form of the verb 知る. It functions exactly the
same with respect to subjects, objects and so on.

More than that, there is a regular honorific form of verbs お+Vi+です (Vi is a
-ます stem). For example, お聞きです from the verb 聞く. It also has an internal form
noun+copula, but functions as a verb.

It seems like any predicate, be it verb, adjective, or noun+copula, can
function like a verb, if there are some logical slots for subjects, objects or
modifiers in its meaning,




ご存じです is an irregular honorific form of the verb 知る. It functions exactly the
same with respect to subjects, objects and so on.

More than that, there is a regular honorific form of verbs お+Vi+です (Vi is a
-ます stem). For example, お聞きです from the verb 聞く. It also has an internal form
noun+copula, but functions as a verb.

It seems like any predicate, be it verb, adjective, or noun+copula, can
function like a verb, if there are some logical slots for subjects, objects or
modifiers in its meaning,

