That's going too far, way too far although mainstream anything is kind of shit in general.
Prior to the Scientific Revolution, popularization and establishment of the scientific method you basically had mathematics which can be considered a 'formal science' but without innate application to the universe, and astronomy where several important figures made/drew accurate observations and conclusions but were oblivious to the connection between the terrestrial and celestial, that they were bounded by the same framework.
Enter: Isaac Newton and Modern Science, or as I like to call it - the Cornerstone of Modern Human Civilization. He put humanity on his back and carried it onto the new frontier, nothing would ever be the same again.
His threads run up through to the present day and are as valid within approximation as they were 330 years ago. They'll be as valid as they are today another 330 years from now. In fact, Newtonian Mechanics is so accurate to observation and experiment under non-relativistic 'everyday' macroscopic conditions that it's still utilized for space travel within our solar system, whether working out the trajectories and orbit of a spacecraft or sending a rocket to the moon. That's the difference, that's (physical) science as it is recognizable to us as an enterprise of cumulative human knowledge.
Nothing is 'scrapped', it's modified. The exotic theories you're referring to at the end of the post are technically still in the hypothesis stage and mathematical conjecture, nobody presents them as scientific facts and if they do they're outright lying.
In any case, I'd would agree the equilibrium in physical science between the theoretical and experimental has been thrown way out of balance and become overtly geared towards the former to an almost unhealthy degree over the last several decades. I largely put this on Albert Einstein though it's certainly through no fault of his own. His insight through almost pure fluid intelligence, thought experiment, paper-and-pen is just simply that profound and baffling, his elevator is utterly inescapable.
