Am I missing some big news that happened in the past weeks which threatens EU user's privacy? Or is this political wind happening in US so you decide to switch ? I am reading a lot more about Russia and NATO in this thread.
I don't want to continue to contribute to making richer companies that try in every possible way to steal data and wealth from their customers and other nations with unfair behavior at the edge (or beyond the edge) of the law.
And if that is not enough to also use every possible way to manipulate the people's beliefs with false claims and evil psychological tactics.
This makes it hard for US-companies handling data of EU citizens to comply with EU privacy regulations. Some legal provisions have been made to facilitate this, but, to answer your question, what changed recently is that the Trump administration recently effectively incapacitated the "Privacy and Civil Liberties Oversight Board" that was central to these legal provisions.
Above is my interpretation of matters, for a large part based on posts by a Dutch expert in these matters, Bert Hubert. In particular see this post: https://berthub.eu/articles/posts/you-can-no-longer-base-you... and this news article it links to: https://noyb.eu/en/us-cloud-soon-illegal-trump-punches-first...