Whether that's the intention or not doesn't matter, it has the potential to be and that is simply not acceptable.
When a developing world country like India needs to use monetary policy to stimulate their economy but those transmission mechanisms aren't working because a significant part of the economy is using Libra, that's a major threat to their sovereignty. It's digital colonialism.
https://www.washingtonpost.com/news/wonk/wp/2014/07/31/argen...
Or you could say that all these European superpowers of the time competed with Native Americans.
Just today, Nick Clegg, former Deputy Prime Minister of the United Kingdom, and currently Vice-President for Global Affairs and Communications at Facebook, explicitly asks for FB to be regulated [1]: "We need governments and policymakers to engage with issues like these and help set the parameters for us".
[1] https://news.sky.com/story/sir-nick-clegg-link-between-socia...
That's the point of confusion. This is not an end around. This is about extracting tolls - slivers - from economic activity. They will all comply with the status quo, they will say what needs to be said, they will bow as they need to bow, they merely want to get their little cut on a billion transactions. It's nothing more than an attempt to layer another transaction processing fee-based system into/onto the global economy. There is no other point, it's why Facebook has partners like Visa interested.
These guys could not care less about replacing national currencies or doing an end run around of political control. In fact it's the exact opposite: they would want the regulators to make sure Libra is the standard that they can properly exploit, and raise the walls to other competition. That is how these companies always behave, it's rather obnoxiously predictable. They will be thrilled to work with regulators to keep things exactly as they are, with a little exception for their new baby parasite that gets 0.3% of everything (and please regulators, while you're at it, make it really hard to compete, make the regulations impossible for everybody else to comply with).
They do not want the political power, responsibility and conflicts that come with national currencies. They want the money, the fat juicy profits, that come with extracting high margin tolls. It's ideal to leave the national fiat currencies intact, so they can extract additional fees everytime people want to change their money. Libra is a rider, national currencies come and go.