The way this type of query is processed requires acquiring a collection (and a WT snapshot) 3 times:

1. In the find command, where we see it's a view and defer to the aggregation framework after releasing the acquisition (and the WT snapshot)
2. In the aggregation comand, where we see it's a view, so we resolve it and reenter after releasing the acquisition
3. Again in the aggregation command.

In PERF-4259 we saw that removing one of the acquisitions improves performance of Queries.IdentityView.TwoInts about 5%, removing the 2 extra acquisitions would be ideal.