this is assuming we humans know exactly how the supposedly immutable “laws” of our universe operate
No, it is working with what works, for practical reasons, instead of entertaining the impossible and using that as an excuse to push grandiose conspiracy theories of hidden "knowledge".
If only the Rothschild bloodline was replaced by Nikola Tesla’s
Like this, evidence that the purpose of this propaganda is political antisemitic disinformation.
Also, while Tesla was influential, there's the magic he believed in, as well as the magic people invent and promote under his name. Wishthinking alone doesn't provide practical working technology. Hypotheses need to be tested, then means to extract energy from a system in a way that can be utilized is another instrumental step. Some actual recent interesting development for instance is fusion ignition having been demonstrated in 2021. There still are other challenges if that step was attained, especially for large scale use.