The cookie banners are a bad outcome for sure, but GDPR does not mandate them. They are an indirect result of the bureaucracy installed by GDPR which does not incentivize user-friendly design of privacy-aware features. I don’t want GDPR rolled back, even as a software developer, because I think it creates the kind of protections everyone in the world should have. But I would like a rule clarification on how to build compliant websites without cookie banners, so I blame the administration (the EU commission) but not the legislation.
The digital markets act similarly is the kind of regulation we need everywhere. It’s only hostile to online businesses because other places don’t have those kind of guard rails on the abusive behavior of big tech.
Now, as far as the EU AI act. I think that in its original intent when it was specifically targeting things like public face recognition by governments it was a very good idea, but it has been hijacked and in its current form it would be very harmful if passed. I don’t think it particularly targets american tech companies, because the biggest victims would be EU AI startups like Mistral.