Right. The underlying issue was never resolved.
First, TrueNAS removed the restriction on their end, prior to OpenZFS 2.3.0, to “match how FreeBSD does it.”
Then later on, OpenZFS 2.3.0 removed this restriction of the default value for Linux systems, “just because”.
Nowhere do I see that memory management of Linux with ZFS+ARC has been addressed. This all feels like they’re just winging it and deciding, “Yeah, we don’t think this is a problem anymore. Modern systems should be able to handle this just fine.”
See my previous post that links to the commit on their GitHub.