All the attachments, though... man this is going to be such a pain :/

As the database is encrypted in your device, you dont really need to self host. A keepass database in the Google cloud is not really problematic, although you should still choose a more private cloud provider.

or use syncthing, no hosting experience required

It doesn't need to be complicated. I use syncthing to synch them. It's pretty trivial. You just tell it what folders to synch, between which devices, and it'll synch whenever it's running.

I found the easiest way to sync is to use rclone. This way you can use any cloud provider like Google Drive or OneDrive or DropBox. First create the rclone remote for your cloud provider using rclone config. Second step is to create a second remote using the encryption option (menu item 16), choosing an appropriate path <first remote>:<path to directory>. Upload your KeepassXC database to this encrypted remote using rclone copy.

On Android you can use the RoundSync app from F-droid to configure the the same remotes, then create a task to copy or sync from that encrypted remote and a trigger to run that task on a schedule. Overall, this one-time setup works really well for me. This is my backup in addition to using Bitwarden for several years. Bitwarden is not going to get my money any more.

post-quantum encryption algs

I use the built in ftp sync option with any file explorer that makes an ftp server on my phone.

But you still use the official BW client apps, correct?

Unless you forego usage of the clients and access Vaultwarden through the browser (removing accessibility and convenience especially on mobile), it is not an e2e replacement solution.

Are there any alternative FOSS clients/apps that work with Vaultwarden?

Edit: I see further down that the official client is open source, and would get forked in the event of any fuckery. So I'm sticking with Vaultwarden + Official client app approach for now.

For now

I've been hosting it for a couple years now and question why it took me so long.

I'm pretty sure that isn't self hostable.

That might qualify as an argument but the enshittification of everything hasn't gained anyone power, only money. Cuba was curing cancer before we started more war crimes in order to prove socialism doesn't work, while we're financing fast food.

I think there's a difference though, in that capitalism rewards this kind of innate motive, while socialism doesn't, so I think it would be much easier to build a system based on that that's not fucked from the foundations like capitalism is. The societal benefits of capitalism always feel like an accidental side effect at most, when it should be at a heart of any economy system.

Also it definitely seems that holding power over others warps the human mind, so I would definitely advocate for distributing policy-making power as evenly across the population as possible.

Kicking the can down the road implies you have a better solution?

It does not matter how easy exporting is, the difficulty is going someone who really does not understand why they should be using a password locker to use one, much less change to a different one.

Does this mean other companies are hosting compatible servers to switch to?

I'm out of the loop, what happened to OpenOffice?

Yeah I know but I’d rather just expose the services I want.