The not-too-representationally selected/elected leaders of China want to keep the power of pegging their currency, which is very essential in a centrally planned economy, at the cost of personal freedoms. (And the yearly 50 000 USD limit is more than enough for poor people to send all of their savings away to a fraudster though, so it's not absolutely the right thing.)
A powerful private banking system is very different from a shadow bank that uses identity theft/fraud to store and gambling to exchange currencies. A healthy banking system helps allocate credit (which is risk), but since the barriers to entry to the finance sector is high (cost of regulatory compliance, IT security risks), margins are low (products are fungible, a mortgage is a mortgage, a savings/checking account is a savings/checking account, it doesn't matter which bank you chose, so you'll use the cheapest) and network effects are also high, we don't really see a healthy banking sector. (Thus risks are largely concentrated in too big to fail banks, and that's why the new big bank requirements include systemic exposure stress test regulations: https://en.wikipedia.org/wiki/Basel_III - of course, it's easy to argue that this just moves bubbles somewhere else.)
As to the other claims ("Now we see the US and the EU largely controlled by banking interests" - no, we don't, we see populism/nationalism/chauvinism, we see good old regulatory capture [the FCC Chairman is an ex-Verizon lawyer currently playing dumb for a lot of money, or just out of spite, the EPA lead is a proud climate change denier, the current UK leaders are typical isolationists, and so on], "very little if any taxes applied to financial gains" - cca average of 15% is not very little https://en.wikipedia.org/wiki/Capital_gains_tax and "the entire industrial complex has moved to China" - no, only the labor and raw materials intensive things [which is of course an enormous slice of the pie], but nowadays the problem is with lack of effective retraining in the advanced economies.)