Yes, of course it is. How could anybody think otherwise? What is the worst thing Visa can do and what is the worst thing Visa has done? What is the worst thing the government can do and what is the worst thing the government has done?
As far as I can tell the legal landscape of the solution currently only allow the actual government to look at the data with the standard court orders. I believe not even the 10k report limit is applied to pix atm the same way as the other methods.
Regarding fake transactions, that would be a non concern to me, the system is only centralised in parts, the banks still hold most of the data so they would have to collaborate on this potentially leaving lots of evidence behind. Governments do not need to be subtle to screw you over, see current US deportation news.
Its not that much different than how bank transfers in Europe work in practice. The US is particularly archaic in banking technology available to the public.
As a citizen of a still kind-of-functioning democracy, I'd happily make the trade if that means Apple, Google, Visa or Mastercard don't have the information anymore.
There must be a non-repudiation and integrity check to verify transactions (e.g., in Estonia I sign digitally all my transactions), so the latter problem is easier to mitigate.
So there would be more safeguards
It's not different from what we had before.
EDIT: it didn't actually change a thing. Banks are still required to maintain transaction data private, and agencies, including the government, MUST obtain a warrant to break transaction data secrecy.
Pix mostly replaces and eats on credit card transactions that were done for the convenience aspect and no the credit aspect. As well as allow a whole new part of the country to accept electronic payments, and although that would increase tax revenue from business it also substantially increase their revenue since there is no x% from card processors and don't require special rented/bought equipment.
(If you're reading this, please note this comment was written in 2025)
On top of that, it will provide the said information to government agencies if asked.
And if a government decides to just ignore those, it will also have no need to watch your transactions or create fake ones.