As a former theoretical physics grad, I want the nostrverse to know that dark energy and dark matter are not "bullshit" or "fiat science".
The whole point of real science is to find the model that best accounts experimental measurements and better predicts future ones.
Such model is not required to have a "satisfying" semantic/philosophical human "explanation". This is not a Netflix movie or some shit. Science is about the how, religion is about the why.
Dark matter and dark energy really accurately explain the redshift from observerd galaxies better than anything else. Like it or not, it's the best we have until something else comes along.
Many "made up" things eventually got so normalized no one thinks they are bullshit anymore: atoms (like everything is legos, seriously?!), neutrons, neutrinos, etc.
/rant over