This is nothing more than propaganda. You seek to instill fear through telling lies.
Oil companies have been through there extensively and there is no oil reserves in that area. Nor has any fisherman been inconvenienced beyond not being able to use the immediate area. Nor has any ships passing through those lanes been disturbed. There claim of authority does no more than overlap the already existing overlapping claims of ownership to that area that has existed since those countries first came into existence.
I would say your fantasy is as harmful as any fantasy to drop bombs.
This is no propaganda. Look at the map below. China's claims are the red dashes, which are clearly overtaking the 200-miles exclusive economic zones of multiple other countries, including Vietnam, the Philippines, Brunei, Malaysia, and Indonesia. They claim this solely on the basis of 'historical right'. That basis is as legitimate as the 'mandate of heaven' was. This is
clearly a violation of international law and the rights of the nations I mentioned before. Regardless of whether the Chinese are building military installations in this disputed area (they very obviously are), the claim itself is illegal.
Your claims about there being "no oil reserves in that area" is laughably false. According to
the US Energy Information Administration, "the South China Sea contains approximately 11 billion barrels of oil and 190 trillion cubic feet of natural gas in proved and probable reserves." The contested areas
do hold some of these hydrocarbons, and may contain more than is currently realized as exploration has been halted by the Chinese. There are also
multiple accounts of Vietnamese and other fishermen who have been attacked or otherwise harassed by Chinese military vessels for fishing within their nation's exclusive economic zones. Chinese fishermen, backed by Chinese military vessels,
have also been fishing illegally in the waters of other nations, just as provocative a move as building on these reefs.
China is also not happy about traditional US 'freedom of navigation' exercises, which involve sailing US warships through globally-recognized international waters to assure that trade and navigational rights are being respected. After one of the more recent US exercises in the South China Sea,
the Chinese sent out their own warships and warned the US away from the disputed reefs which are, again, in international waters. This does not bode well for freedom of navigation, which is critical for global trade.
You also mention that the Chinese claim "does no more than overlap the already existing overlapping claims of ownership to that area that has existed since those countries first came into existence." This rationale is not only faulty, it would break the international system we are currently operating under. Who gets to decide when a country "first came into existence"? The Chinese obviously did not control all of the territory they are currently claiming when they first existed, but instead when they were at the apex of their power. If the rules were done that way, would the UK control the waters around India, half of Africa, the US, the Caribbean, and Canada? Would France get to set their boundaries at the height of Napoleon's conquests? No, of course not. That would be patently absurd. We have the system we do not because we set it up after WWII to be as fair as we could make it while still benefiting the US and other Western states. That means that nations get to control the waters 200 miles off of their coasts, period. China does not get to exert fuller control simply because of some 'historical right'. China is no better than Vietnam, or the Philippines, or Indonesia. Just like we are no better than Canada or Mexico. If we are all following the same rules, we should all play by them. Once we allow China to break the rules here, we are allowing them to break the rules wherever they want. That's a recipe for utter disaster.