However, who decides which nodes, which they call validators but are not automatically validators, are included in the Unique Node List, which should be called Trusted Node List. Who?
Read this from your link.
It's important to understand that merely issuing validation messages does not automatically give your validator a say in the consensus process. Other servers ignore your validation messages unless they add your validator to their Unique Node List (UNL). If your validator is included in a UNL, it is a trusted validator and its proposals are considered in the consensus process by the servers that trust it.
In any case, do not worry. You will understand in time.
Congrats on cherry picking only parts that prove your point. For clarity, and for ofher people in this thread that would maybe
like real info instead FUD, allow me to copy/paste what you omit:
"Which UNL should I select?
Since anybody can run a validator, the burden is on the network participants to choose a reliable set. Currently, Ripple provides a default and recommended list which we expand based on watching the history of validators operated by Ripple and third parties. Eventually,
Ripple intends to remove itself from this process entirely by having network participants select their own lists based on publicly available data about validator quality.If Ripple recommends adoption of its UNL, doesn’t that create a centralized system?
No. The XRP Ledger network is opt-in.
Each participant directly or indirectly chooses its UNL. Should Ripple stop operating or should Ripple act maliciously, participants could change their UNLs to continue using the XRP Ledger"