I’d say it depends on your threat model, it could be a valid option.
Still, how are you going to manage them?
A password manager? You’d still be posing the same question: should I keep my accounts in a single password manager?
Maybe what you can do is use aliases, that way you don’t expose anywhere the actual account used see your inbox, only accounts to send you emails.
But I tries this and some service providers don’t handle well custom email domains (specially government and banking which move slowly to adapt new technology)
there’s also Aegis and 2FAS, but I have no idea about WebDAV servers and also don’t want to rely on Google Drive for backup, also because I’m moving away from Google services.
If your only issue are the backups, then you can still use aegis with automatic encrypted backup to a folder in your device and then use syncthing to automatically send it to your machine. From there use any other backup solution like duplicati or restic.
(Remember that syncthing is not a backup solution, it should only be used as a way to automatically sync files between devices)
(People have had many issues with duplicate, but I’ve only seen posts about huge amounts of data, for something like aegis backups has been working fine for me)
I’d also recommend you asking in !selfhosted@lemmy.world
The only issue I’ve had is with games from kakao, they crash after a few minutes of starting. I think the last time I tried it said something abiut modification to the OS. But that’s the only developer I’ve had problems with, the rest of the games I have play without issue.
Also the only downside I see is the tap to pay not working at all, but that’s not graphenOS’ problem, google won’t certificate them.
I’ve been using traccar. It’s more like a service for fleet management, but as a selfhosted alternative is as best as I was able to find.
Syncthing is so great, I don’t have to deal with things like a FTP server, sending files to a cloud drive, connecting via USB, or similar. I just point syncthing to the folder I want to replicate and my PC has it immediately and receives new files as soon as I connect to a WiFi (because of my configuration), and then at the PC I can easily backup the files.
I used this one when I installed pihole and wanted to find out which app was hammering a tracking site (It was a red icon app who complained some apps are not optimized)
https://github.com/TrackerControl/tracker-control-android
Although I don’t know who much info you can get about the requests from it, I only used it to find the culprit and since it was an easy decision I uninstalled it, I didn’t had to check what data was being collected.
My unpopular opinion is I like ads, some are well thought, funny, and memorable.
Ads in videogames which allow you to have a small boost are also amazing, I don’t have to spend money, just leave my phone for 30~60 seconds and I get a bit of premium currency while supporting the devs.
The annoying/worrisome part is all the tracking the ads have, and the ones which are very invasive which take half of the screen.
If we could go back to TV ads where everyone watches the ads without individual targeting, and with current technology to protect against hacking, and getting them in sensible places to not hide the content I would place and exception in my ublock and pihole for them.