I seem to remember the maritime unions fought containerized cargo too. A walk along San Francisco's Embarcadero will testify how that fight went.
Look, even I as an airline pilot can see my profession's demise. You can now order a 777 with auto take off capability, you do not need to order auto landing capability, it is standard. The airplane I fly if something goes wrong demands that you complete the computerized checklist down to the last detail before it will reconfigure itself for the crippling event. It would be very easy to program that checklist to activate the system the pilot now does himself. The two weak points to autonomous operations is sensors and communications. Once broad band sat comm is enabled (as in internet over the ocean our passengers so crave) to eliminate communication latency, it is just a matter of reliable sensors and/or sensors which are continuously monitored for their integrity and it is all over. Believe me, companies are not launching all those commercial communication satellites accessed by airliners so you can surf the web at 35,000 feet.
As to the low wages of crews, that is only one part of the equation. When you eliminate the bridge, crew quarters etc as the article says, you gain a lot of payload capability both in volume and weight.