That seems like the worst time to add new functionality.
That was my fear when Apple rolled it out at the OS level -- that it would only ever be half useful because it just wouldn't become universally adopted.
Contrast that with, for example, 2x/3x retina resolution across apps and the web which is now totally standard. I almost never see icons or UX elements with blocky pixels anymore, except on extremely old forum software.
By this point I almost wish Apple would forcibly smart-invert everything that looks like light mode into dark mode at the OS level. Like trying to read Google News at night is a nightmare because half the articles are dark but half are light.
[0] Firefox: https://addons.mozilla.org/en-US/firefox/addon/darkreader/
[1] Chrome: https://chromewebstore.google.com/detail/dark-reader/eimadpb...