Researcher proposes model replacing dark energy/matter to explain universe

How do I get out of this chickensh*t outfit and onto that other timeline?

Why do you think that how hard it is to detect should have anything to do with how much of it there is?

> Proponents of all of the above are looking for a grand unifying cosmology. Dark matter and dark energy are confusing and unknown, so people want to just simplify them away. Flat earthers want to simplify away the existence of other planets. Antivaxers want to simplify away medicine.

Ironically, you are positing a grand unifying theory here by stating that detractors from mainstream opinions just want simpler answers. But isn't it simpler to just go with the mainstream opinion and go with the flow? Alternative models of the earth are typically rooted in Biblical or ancient belief systems. Any specific argument based on physics come long after a person's acceptance of, e.g., the Bible. And I can't even imagine how you might think anti-vax beliefs are simpler so I can't speak to that. Homeopathy sounds pretty dumb to me, sure, but also there are tons of reasons to distrust the medical system in the USA, I'd be surprised if anyone seriously argued against that. I can understand why people suspicious of America's medical culture of prescribing 10 medications to someone instead of lifestyle changes might see a bottle of sugar pills at the store labeled with "natural remedy" and think it could be a better alternative.

> Every new observation has completely overturned the predictions of every MOND or modified gravity theory, and they just come back with a totally different explanation to fit the new data.

That's how science works. Scientists are not prophets, they do not have the luxury of starting with all the answers. It's really disheartening to see you make these theories into an "us vs them" ego contest.

I'm guess I'm just a dyed-in-the-wool agnostic, but when I hear someone suggest an alternative theory I don't immediately feel the need to group them with everything I think is wrong with the world. Instead I think, "That's really cool they came up with a different model of the universe. I wonder how they account for everything we observe and how it will be refined over time and whether it will predict new discoveries." Even if your current theory never gets overturned, I think your attitude is a perfect example of why science is said to advance one funeral at a time. Just because they got it wrong in the past doesn't mean they can never get it right, and it doesn't mean there's a 100% certainty that you got it right.

People and scientific instruments are made of "normal" (non-Dark) matter, which makes it easy to detect other "normal" matter (electrons, protons, quarks, photons, neutrinos, what-have-you). It's hard for us and our instruments to detect or even be aware of Dark matter at laboratory scales, which operate over the electromagnetic and nuclear forces which Dark Matter feels little or not at all.

At astronomical scales, however, things are different. At those scales, gravity wins out, and is one of the dominant things we observe in astronomy. Dark Matter may not feel the electromagnetic and nuclear forces the way normal matter does, but it feels gravity the same as every other particle does. Nobody gets a pass from gravity, not even Dark Matter.

Consequently, it's relatively easy to observe the gravitational effects of Dark Matter at the astronomical scales of the rotation of galaxies and the dynamics of galaxy clusters, even while it's difficult or impossible to observe the non-gravitational effects of Dark Matter at laboratory scales.

> If your new hypothesis doesn't even mention the CMB power spectrum

MOND successfully predicted the first peak of the power spectrum. I wonder why everyone focuses so much on LCDM predicting the second peak.

> DM does that, everything else does not.

Whenever someone says DM "does that", it's often after its initial prediction was falsified and the calculation was modified in some way to account for the new observations [1,2]. This has been going on for decades, so that's hardly a ringing endorsement.

I'm not surprised mind you, this is the hallmark of the confirmation bias that's been characteristic of LCDM for decades now.

[1] From Galactic Bars to the Hubble Tension: Weighing Up the Astrophysical Evidence for Milgromian Gravity, https://www.mdpi.com/2073-8994/14/7/1331

[2] Not that MOND is a suitable replacement because it too has its problems. My only point is that this tendency to sweep these inconveniences under the rug as if DM is a compelling and successful theory and saying "nothing else does the job" is disingenuous at best. What you should say is that "nothing does, period, not even our best DM theory", because that's the truth.