I don't see the AI talent visa as a serious suggestion. There's already the Blue Card, which is pretty easy for software engineers to obtain; for an AI talent visa to be anything special, it would have to loosen the already fairly lax requirements. To manage to persuade the whole EU to create a special visa for an emerging field that doesn't even have commonly-agreed-upon qualifications would be a unrealistic feat when many EU member states are looking to close down immigration opportunities, not create them.