I think you are spot on.
We have bookings with Flightease and got an email last week stating something along the lines that as the call in wait times and response time is long, if you are travelling within 7 days and there us a change, you can cancel and rebook yourself (direct with airlines or whatever) and they waive the cancellation charge. Basically, "there is no easy way right now, if you can do better yourself - go for it!" 🙂
Found the statement we received -
""Thank you for purchasing your flights through Holland America Line's Flight Ease air. Due to an unprecedented number of airline schedule changes and cancellations, our team is currently managing an extremely high call volume with long hold times. We regret any inconvenience this may cause.
We are working on changes in travel date order, and appreciate your patience. We respectfully ask that guests and travel advisors only call if your flight is
in the next seven days.
If your flights have changed and you would prefer to rebook your flights yourself, you may cancel your flight through the Flight Ease tool and we will waive any cancel fees so you may rebook through Flight Ease or purchase independent air.""