SERVER-82180 made it possible to scan capped collections in natural order when running dbhash. However, in order to be multiversion compatible with older binaries that perform an index scan on the _id index, a parameter (useIndexScanForCappedCollections) was added that would revert to the older behavior.

Once we are no longer running binaries older than 8.2 in multiversion suites this option should no longer be necessary, since all binaries would scan in natural order.