Most simple filesystem with content checksums?

[Ellie <el%horse64.org@localhost>]

Dear mailing list,

Sorry if I'm posting this in the wrong place:

I've been pondering to move to NetBSD. In the past, I've had the sad 
experience of having bit rot affect data on a modern storage medium.

Hence I've since been trying to use filesystems that have content 
checksums. On Linux, I've been using BTRFS in part because it seems a 
tiny bit leaner than ZFS (sorry if that is incorrect), but even that one 
seems kind of overengineered for only having content checksums. I don't 
care for snapshots, raid handling, or anything else.

Now I'm looking to move some machines to NetBSD.

Is there a relatively "boring" filesystem choice for NetBSD with content 
checksum option that I could enable?

The other reason why ZFS concerns me a bit is that the upstream 
implementation seems to have gone deep into the AI slop coding which I 
prefer to avoid for personal reasons - on top of quality concerns.

I would also like to use disk encryption:

As a side note, is there some script or terminal UI that installs NetBSD 
with disk encryption? 
https://www.dwarmstrong.org/netbsd-encrypt-install/ The process 
described here seems surprisingly manual.

Sorry if these questions are misinformed, I'm happy to learn!

Regards,

Ellie