Thanks for the link, Pete!
I saw this one already, and it have been statements like “If you are looking for an OS with hardened security, use Graphene” or “the ideal world is a mix of security and privacy” that made me curious and motivated me to start looking a bit deeper into /e/'s security.
Probably, my questions above were too detailed, let’s put it in more general words:
Does /e/ provide the same level of security as the Android stock ROM?
Or have some features or configurations been removed/added/changed?
I saw, that /e/ published a list of working banking-apps, see:
[LIST] Banking Apps that work on /e/OS
https://community.e.foundation/t/list-banking-apps-that-work-on-e-os/33091
and believe this is one more reason to have a look on security.