Probably not, given that statement. There's a reason why nearly everything I deal with today in large enterprise uses ZFS.

I also think he took a reasonable licence issue and conflated it with personal opinion not backed by experience. Nobody who has actually run ZFS says its just buzzwords.

The license issue is not actually so clear. The actual license is a good one. Oracle itself it the bigger problem.

Don't know.

Certainly about a decade ago the ZFS' chief architect, Jeff Bonwick, and Linus have met:

https://blogs.oracle.com/bonwick/casablanca-v2

his position is about legality, nothing else. I can see his point.

I once read this story about the problems trying to support ZFS - was it in the Linux kernel, though? Can't remember. Sadly, I can't seem to be able to dig it up right now, but the article walking readers through the various clashes in constraints between the different systems and implementations was bordering on the humourous.

I've never used it. What makes it so good?