I'm a big fan of /e/OS, use it daily and love it. As I understand it, it is as secure as Google Android, just tons more private. So security wise it seems fine to me, my risk profile is just regular mainstream
This is actually incorrect, on almost all devices that Murena sells the bootloader is locked. I think you are confusing their official builds with their community/volunteer builds
No worries Google's actions against installing apks from outside the Play Store will only influence Android, not any of the other operating systems that are based on the Android Open Source Project (AOSP)
/e/OS fan here, imo it combines a great design and interface with lots of privacy options. Super easy to use. Also the combo with the Murena Cloud is incredibly useful
Best deGoogle option imo
You've got to be kidding me, have you seen the Mastodon account of GrapheneOS? There is no haressnent towards them, the only ones doing the haressnent are GrapheneOS.
Batteries