He was laughed at, scoffed at, ridiculed and mainstream science disparaged his name and reputation mercilessly
Tesla's reputation is still pretty sound as far as I know. Some of his inventions and ideas may not be respected, but then the same could be said of Newton or indeed Darwin.
At one point, in experimenting, he caused shallow earthquakes, and seems to have been able to create resonating waves which could draw out energy that resonated at those frequencies so that the very energy in the fabric of the universe and the earth could be tapped directly.
How do you go from generating sympathetic resonances in the earth to "the very energy in the fabric of the universe and the earth could be tapped directly", or indeed draw any inferences that he was making use of 'vacuum energy'.
Tesla was certainly a very remarkable man but you seem to be totally uncritically accepting any claim about any of his ideas, or at least expecting us to? Wireless transmission of power over short distances by induction is well understood, what are you suggesting Tesla's alternative long distance method was and why are you positing any role in it for the 'vacuum'?.
TTFN,
WK