@GP010 , having gone through all the replies and comments above and agreeing with my colleagues @Mike9241 @SteamTrain @VolvoGirl et al ----
1. the threats that these sites talk about are real -- i.e. it is possible but facts and circumstances dictate the probability of such. It is like saying in the US there is death penalty -- you could be subject t death penalty -- it is true but they don't tell you before that you have to be convicted of a serious crime -- so it is possible but very low probability in general.
2. You are correct that US is one of the few countries that tax on citizenship and/or residency while most countries have only a residency requirement for tax purposes
3. enjoy your good life roaming the world but note that when you leave the international waters , you come under the jurisdiction of the country whose waters you have entered and their tax laws may come into effect -- e.g. some countries have wealth tax, VAT, and other mechanisms for funding themselves.
Enjoy
