Probably a case of one hand not talking to the other. Unfortunate, but probably common among many airlines.
Filing flight schedules/fares/etc is really cumbersome. It's entirely possible the process to file June 2021 flights was approved and started a long time ago before the decision to drop these flights.
Regarding easyJet holding your money - I'm sorry, but I'm not too sympathetic here. easyJet has plenty of time to find another route and you should have known that booking a mid-2021 flight right now carries significant risk.
As of 17th August, EasyJet know my flight will not be operating in June 2021.
The closest alternative route they will be able to offer me is from Manchester.
For a number of reasons, Manchester is not practical for us.
But more to the point, it isn't the route we booked!
You are entitled to your opinion, but I really don't see how it is reasonable for EasyJet to hang onto my money for a further 10 months!