As the user who answered, I should perhaps weigh in here...
I'm not a fan of ID questions and am, perhaps, one of the strongest critics of them as a whole on Movies & TV even though I've only been here just over 12 months.
Unfortunately, there is no consensus, nor is there likely to be, about how much detail is enough to meet the criteria laid out in our guidance.
This is especially true since users often have incomplete or incorrect memories of the movies we are asked to identify.
Is a highly specific scene enough to ID a movie?...Some say yes, some say no but there is no practical qualitative measure that could be imposed or implemented to produce an "acceptable" question.
Movies & TV has a history of poor ID questions which feeds into a much larger discussion about bannng them altogether.
Evidence suggests that we close / delete between 60% - 70% of all ID questions which, by themselves are 40% - 45% of ALL questions asked.
Those are not good numbers (IMHO).
The debate rages over whether to ban ID questions and the most recent 'poll' was just over a year ago. In fairness, extrapolation of 2017 data (based on a perhaps unrepresentative 6 months sample) suggests that ID questions are getting slightly better but the margin is not really that wide and, as I said, not based on actual final data.

In this specific case (and I'm obviously not impartial) I did think that there was enough detail (or inferred detail) to answer otherwise I wouldn't have done so....but none of us is infallible.
Is the "policy" too strict.
Well, there is no "policy"...only user consensus. If enough users think it doesn't have enough detail it will be placed "on hold"...and that decision will be reviewed by other users.
That's not the end though...this is important.
A question isn't DEAD because it's on hold. it's just in "pending MORE information" and the message provided gives hints as to what more is required.
If you think about it there WAS more information you could have added..dates, actor descriptions, actor ethnicity, language etc.
I'm at fault here because I thought there was enough information but my thinking is not matched by other users.
Mea culpa.