Afaik CC0 is fine for images, video, audio and similar media material — this is also why some people think it is a good choice for code (which it isn't for the reasons you laid out).
It's strictly better than just saying "this is public domain". I think it has about the same energy as using v1 of the WTFPL license: a strong "I don't care" to the point of not wanting to bother with BSD/MIT/Apache.
"Strictly better" means something like: better in one or more way, and not worse in any way.
I don't think you can say that here.
"This is public domain" is better than CC0 in jurisdictions where "this is public domain" is meaningful. Particularly if accompanied by a statement indicating that users are free to reproduce, broadcast and use the work in any manner. The problem is that work can be assigned to the public domain at the copyright level, without users having the license to use its patents and trademarks.
CC0 is better than "this is public domain" in jurisdictions where the latter is invalid, because its fallback license is better than none at all.
As a separate topic, the CC0 (https://creativecommons.org/publicdomain/zero/1.0/legalcode) is idiotically verbose. The BSD license is small enough that I can put it into every source file. That makes it easy for people to borrow pieces of a program.
