Well having this ability to archive wallet address makes it simpler to find addresses in wallet that you want to use
You don't normally 'find' addresses in Bitcoin Core. You generate new ones when you ask for one. It does not normally give you a list of your own addresses.Quote
This could free up resources used within client or loading time. If someone has tuns of addresses in it and has to rebuild or load up
Resource usage per address is very neglgible. Even with tens of thousands of addressees it doesn't take a noticable amount of time.Quote
and if one of the old addresses receives payment it then gets auto shifted to active and a little notice popup saying you received payment on archived address that has now been made active.
Well if it does that, it's not actually deleted!
It is sort of 2 ideas one to perm delete so no longer have it or archive system to have it and save for layer.
In mine I have a bunch generated from clicking send payment that didn't use my main address or didn't tick request to send from option. Not sure what has gone on with it having a bunch of random addresses populate in it that never used or sent any transactions on it so not sure how their their. Since backed up my priv keys of onces wanting to keep deleted wallet and imported since doing seems to run smoother on loading and sending payments and downloading. Not sure what problem could be but was just a few ideas had that could be worth while for people.
Hope this explains of the feature for client more.