Native, Lossless HEIC/HEIF Rotation by Modifying Metadata

Sure.
"Modern" means further developed of something with substance.
"Postmodern" is a state of confusion missing the substance. *)

The currently advertised "modern" image formats like HEIC/HEIF, AVIF, or "JPEG XL" are in fact postmodern phenomena.

The consequence is that they will either a) not last, or b) remain in a niche.

For example, neither of those formats seems to have the capability to perform an actual lossless rotation of the compressed image data, without relying on ancillary metadata.

This was the first feature which I contributed to JPEG more than 25 years ago.

But it wasn't the most important feature, and I don't count it among the four fundamental properties of JPEG for digital image representation.

Regards
Guido
JPEG developer

*) This is my definition of the terms, which after some research seems to capture the essence quite well.
The inspiration came from just listening to the conversation "Europa zwischen Moderne und Postmoderne | Hauke Ritz & Ulrike Guérot".
Thank you to Hauke Ritz & Ulrike Guérot, this clarified my understanding as well. Brilliant minds.