I'd much prefer having a machine on my property as a backup if I'm not home!
Your inconvenience of forgetting your wallet seems minor by comparison when you can just go upstairs, imagine forgetting it after driving and waiting in line... that really is the only alternative isn't it besides the old school "dumb" parcel boxes?
Your inconvenience of not knowing it was there and getting charged was the fault of your landlord, who rightfully paid the fee for you. It wasn't the fault of the box design per-se - but obviously something to be aware of.*
Your inconvenience of spam filtering is probably less likely with an amazon based email system.
I'm happy to see these becoming a widespread thing and being pushed to residential property owners. It even seems superior to the typical package boxes in most new apartment buildings or suburbs as it comes with email/mobile notifications (typical package tracking is far too often less than accurate)!
The only thing better than a machine here is a human concierge who signs for them and calls you if you don't pick it up with your mail. They're paid to be nice to you and are rarely busy.
* Maybe Amazon should make sure to tell new owners to thoroughly notify every tenant before using it - with signs saying it will be installed in x weeks and letters left on your door.