Bosch has been making washing machines where replacing the drum bearings is not supported (the bearings are sealed in a plastic housing) for a while now, not sure if this is the case in all of the models or the cheaper ones only.
But it's not meant to be shared widely, for most people it's meant to be shared with consideration and/or permission.
Also, it's not just about "a desire not be interrupted by people you didn't agree to be interrupted by", it's about not having the data in the first place, for any reason, including tracking of any sorts.
What definition of contact details makes them not private?
Contact details (your phone number, email or address) are definitively private information, you should be the one that decides who gets them and who doesn't.
I really like Prosody because it was trivial to reuse the same user store I use for Postfix/Dovecot so every email account gets an XMPP account automatically.
It looks like you need server support for that as well (makes sense), to bad Prosody doesn't have it in a released version but you have to build it manually.
Take a look at xdrip4ios[1]. If you are using Libre 2 sensors you don't need MiaoMiao, Libre 2 has Bluetooth connectivity built in.
The other piece of the puzzle is Nighscout[2] that stores data in Mongodb (last time I looked at it). You can also enter a custom script to your Nightscout installation that can be your own endpoint to accepting JSON data about BG.
Croatia is a small country and we don't have vast amounts of content in our own language, so when I search I often get bombarded with machine translated content from Russian origin. I suppose it is Russian, since there are images with text written on them that is in cyrillic.
If it were Serbian (they also use cyrillic) there would be no need for translation since we basically speak the same language and a lot of Serbian content is in latin alphabet also.