It turns out we have a bunch of log statements like this one here. These statements are currently logged at info and in the default domain like so:

{"t":{"$date":"2020-06-17T17:15:09.227+00:00"},"s":"I",  "c":"-",        "id":4333223, "ctx":"LogicalSessionCacheRefresh","msg":"RSM now monitoring replica set","attr":{"replicaSet":"repl0","nReplicaSetMembers":3}}

We should only be logging at Info when we notice a new topology. Otherwise, we should be logging at D2 or above. We should also using full sentences and avoiding internal acronyms in log statements.