But why isn't there an official pruned version of the blockchain available?
I would guess Bitcoin Core developer don't want people trust them so much.
If OP really wants a pruned download (which he shouldn't), he can have mine.
It contains
blocks and
chainstate (and for some reason
blocks/index), and was created with
bitcoin-28.0-x86_64-linux-gnu.tar.gz. It was time to upgrade anyway, so I could take a snapshot.
Download link:
pruned.tar.gz (scheduled to be deleted in 28 days).
sha256sum pruned.tar.gz
ad1f56093fc473a82a72854b18cb4f84ea4ff35ed49edd5cc14733d4bf7cb68b pruned.tar.gz