Checking out the road map, nothings changed in a hot second. I think they're just trying to spread the word about it in general

Yes

Nothing. Just helps pay for development.

As we're committed not to add paywalls, this purchase will not grant you any additional features in Immich. We rely on users like you to support Immich's ongoing development.

Bragging rights and improved sleeping ability from the knowledge that the devs are being supported.

The serious answer is it's often easier for people in a company to buy a license key than it is for them to arrange a donation to the devs. So this is an easy way to make small donations.

Good vibes only

I've not seen that option, but I use syncthing instead of the phone application to sync my photos to a specific folder on my NAS which is then an external library for Immich.

TBH, I don't want anything deleting anything automatically.

I'll often delete newer pictures of temporary stuff but keep older pictures of my frinds & family, so, that's not a feature I'd see any value in. It tends to just make me lazy and build up GBs of junk photos on my NAS (and backups...)

it's wip, they are iterating it

i think they added it as beta, then reverted, then now is being reworked