...are bull$hit.
Speaking only of the cable lock types for the hitch racks right now... I lost the keys to mine and defeated it in about 1 second.
They don't keep your bikes safe.
I don't want to go into too many details since I'll get a bunch of people going "oh great, tell the whole world how to steal my bikes!" but do yourself a favor and use a U-lock and/or cable that is made by a lock manufacturer and comes with some sort of guarantee, and lock it directly to the chain loop on your hitch.
I understand those can still be cut, and a hitch can be removed (in no timely manner) but it's enough of an improvement to matter.
Speaking only of the cable lock types for the hitch racks right now... I lost the keys to mine and defeated it in about 1 second.
They don't keep your bikes safe.
I don't want to go into too many details since I'll get a bunch of people going "oh great, tell the whole world how to steal my bikes!" but do yourself a favor and use a U-lock and/or cable that is made by a lock manufacturer and comes with some sort of guarantee, and lock it directly to the chain loop on your hitch.
I understand those can still be cut, and a hitch can be removed (in no timely manner) but it's enough of an improvement to matter.