No doubt they will redefine maximum battery capacity to a figure that does achieve 80% over 1000 cycles. If you under-declare maximum capacity then there is a lot of headroom for actual degradation before you start to show degradation to the user.
Agreed here. I'll check in online, but I'll only install their app as a last resort. I'm hopeful that boarding passes are still sent as PDF.
Then again, I rarely fly Ryanair anyway.