no, these new theories have a huge impact on how we behaveAre you serious? "How the world behaves" depends a lot on what beings with any intelligence can do with new discoveries:
SR gave us nuclear energy
GR gave us accurate gps (and possibly a warp drive in the future, if combined with dark energy)
Maxwell gave us wireless communication
QED gave us quantum computers
And this list of about 100 years of new scientific discoveries is far from complete, of course.
So yes, these new theories have a HUGE impact on how our world behaves. But they need to be combined with some creative intelligence to make a difference. And I do hope we are not the most intelligent beings in the universe. What a waste of space that would be...
by telling us more about how the world behaves, every single one of these theories restricted what we could potentially do and added to what we could actually do
(space can't be "wasted". if you store the universe most space-efficiently, a big bang results)