If your main motivation is never going through that kind of digital loss, please please please do yourself a favor and do not rely solely on a local solution. If there’s a fire in your apartment, the best nextcloud setup isn’t going to do shit for you. Look up the 3-2-1 rule if you want to be safe.
It’s unappealing because it makes you extremely easy to track. So options without bluetooth are a safeguard for your privacy, which is a human right that has been heavily under attack for years. So in that regard headphone jacks are an objective must. Not enough people are complaining, true, but that’s because they don’t understand the technology and the risks are being obfuscated to them.
Don’t forget mentioning Bromite as a Firefox fork…
I recently switched from radicale to baikal. Both are straight forward no frills caldav / carddav managers. Baikal has a more modern UX. My switch came from choosing to use YunoHost to simplify my home server management