Sorry for a kinda clickbait title but it is what it is. I just watched a video about Android 15 changes and a lot of them are either not important or straight up bad.
I want to specifically mention increased background sensor usage (such as microphone) and the Find My Device network. These are serious privacy issues that just make lives of custom ROM developers and users harder by having to disable more and more stuff (that’s turned on by default of course), as well as a contribution to ewaste generation and general decrease of battery life.
I guess we are getting into the era of complete death of digital privacy and absolute surveillance. This is scary but not too unrealistic I guess. I just hope the devs of privacy-focused ROMs will be able to do something about it and purge these changes.
It’s important to note that Android ≠ AOSP (Android Open Source Project). Most of the actually interesting features advertised in a new Android release won’t be available to you if your not installing Google Services.
E.g. heavily advertised features like Android 12’s “Material You” adaptive themes aren’t even available on AOSP and thus GrapheneOS, CalyxOS or LineageOS.
New privacy features often already existed for years on custom ROMs like LineageOS.
This is why since around Android 10 I’m not even following new Android releases, at least not beyond reading glancing over an article. I didn’t even notice my phone updated to from 12 to 13 (GrapheneOS) until I noticed the new background apps menu, which is pretty much all of the changes.
Edit: Being able to set a language per app is a great feature of Android 13.
Edit 2: As pointed out in comments below, my Material You example was wrong.
A better example are heavily advertised translation and image editing features, which are sometimes locked to Pixel and definitely locked to installs with Google Services. Same is true for apps like “Digital Wellbeing”, which don’t work on AOSP but its features are advertised as Android features.
tl;dr
Android updates are even more uninteresting if your using a custom ROM, because most features won’t even be available in open source Android.