I disagree. I think there is no missing matter or missing energy. What’s missing is in the math assumptions and calculations. The fact that they continue to meet their own requirements is nothing more than circular logic - of course they do, they cannot do anything but what the assumptions foretell. But the assumptions - like the Hubble constant - are simply wrong. Yet, everything - in the math - depends on such “constants” being correct.
When the math is finally corrected - maybe 100 years from now - it will be seen there is neither dark matter nor dark energy.
We’ll see! … maybe