I’m hoping someone will come up with some standard language that deals with the issue until laws are made. Even if it’s not effective currently, it may become effective retroactively once laws catch up. But if you have no mention of it, it might not apply to you properly because it’s likely companies will pressure the laws to be opt out rather than opt in.

lending any of your texts, voice, image, writings, etc. to any AI tools

I would think an even worse scenario would be having your entire brain mapped and uploaded, with everything you ever said/experienced/thought/felt/seen/etc. available to whoever. We should be able to take stuff to our graves.