I don't see this one as an existential crisis for AI tooling, more of a persistent irritation.
AI labs already shipped changes related to this problem - most notable speculative decoding, which lets you provide the text you expect to see come out again and speeds it up: https://simonwillison.net/2024/Nov/4/predicted-outputs/
They've also been iterating on better tools for editing code a lot as part of the competition between Claude Code and Codex CLI and other coding agents.
Hopefully they'll figure out a copy/paste mechanism as part of that work.
AI labs already shipped changes related to this problem - most notable speculative decoding, which lets you provide the text you expect to see come out again and speeds it up: https://simonwillison.net/2024/Nov/4/predicted-outputs/
They've also been iterating on better tools for editing code a lot as part of the competition between Claude Code and Codex CLI and other coding agents.
Hopefully they'll figure out a copy/paste mechanism as part of that work.