We allow dropping a view via a 'c' drop entry like:

db.adminCommand({applyOps: [{
  op: 'c',
  ns: 'test.$cmd',
  o: {drop: "xyz"}
}]})

See drop_collection.cpp.

Like SERVER-112876, the Server never generates a 'c' oplog entry like this when dropping a view (rather a 'd' delete entry into system.views) so we should consider removing this possibility.