Last time I touched a Samsung Galaxy Tab Active (also rugged) it had removable batteries too (And could run on power without battery connected). Isn’t that standard for rugged tabs?

I haven’t tried Sync-in but if simple is what you want then a Synology DS225+ should get you up n running quickly.
https://www.androidpolice.com/synology-as-a-google-drive-alternative/

Which part of the seafile install was it that made you back off?
https://manual.seafile.com/latest/setup/setup_ce_by_docker/

Depends on which Piefed instance you’re trying to contact and for what reason.
In the cases of feature requests a good place to start would be piefed.social/c/piefed_meta - !piefed_meta@piefed.social

If it’s about contacting a specific piefed instance then check their about page, f.e.: https://piefed.europe.pub/about

If it’s about helping out with developing etcetera then this page has links that will bring you to the right place: https://join.piefed.social/

That was an interesting read.

If you wanna own your audiobooks you might wanna check out https://libro.fm/ - they allow you to download the bought audiobook without drm.
I gladly accept tips for similar sites when it comes to buying ebooks.

Mullvad - June 2023, the third audit. We’d also like an update, but it has completed a number of other security audits since

Oh, I can feel mullvads policy in that article opinion, especially since Mullvad too has had their no logging policies tested in practice just like Windscribe
https://mullvad.net/en/blog/update-the-swedish-authorities-answered-our-protocol-request

We never pay for reviews
It may come as a surprise that many product reviews found on the Internet are actually paid ads disguised as unbiased reviews. Sometimes, the more a company pays, the more favorable its product or service is reviewed. From a consumer’s standpoint, this makes it hard – if not impossible – to know when a review is genuine and when it’s a biased advertisement.

We do not have affiliates, and do not pay for influencers
In other words, we do not pay anyone to write about Mullvad – good or bad. We don’t even pay for links back to our website.
https://mullvad.net/en/help/policy-reviews-advertising-and-affiliates

I enjoy that Mullvad are transparent with their third party security audits:
https://mullvad.net/en/blog/fourth-infrastructure-audit-completed-by-cure53