mansaloco;
If I understand you correctly, your operator is using the derogation option (a)(2) of ORO.FTL.235 (reducing minimum rest from 12 hours to 10 with hotel provided) to justify not complying with CS FTL 1.235 (a)(1) Disruptive Schedules.
Do they explain how they relate these two seperate issues?
Reducing minimum rest from 12 to 10 hours when providing hotel accomodation at the base makes sense; travel time is reduced and external factors such as children, family, home stress etc are removed.
I fail to see how the same argument can be made for allowing roster disruptions at home base where adequate crewing should be available.