Earlier quoted context omitted.
My Honda Hybrid is the same way, sometimes I go weeks between drives and if I park it for more than a couple weeks, I plug it into a 12V battery charger to keep the 12V battery topped up. But I blame the car's smart features (that use the cell modem to allow remote start, etc) rather than it being a hybrid. I suspect that the non-hybrid model would be the same.
My 1991 Honda motorcycle does this too. I can promise you that it has no smart features. It doesn’t even have a fuel pump. Lead acid batteries just don’t have long shelf lives.
I'd like to think that at some point the parasitic drain devices will shut down before they drain the battery completely, but I've never tested it beyond that point, I always plug in the charger if the car's going to be parked for more than a couple weeks. I installed a charger plug that comes out the front grill so I can plug it into the battery maintainer without even opening the hood.