I think you might want to re-look at the "fingers of God" article which for me shows SERIOUS problems with redshift.
It's a series of distributed data points that he claims astronomers class as a single supercluster. Do they? And did you also know that the farther you go out to measure, the less accurate your points may be, so there are fewer solidly confirmed data points? This is astronomers being scrupulously honest and Arp being a disengenuous wacknut.
Halton C. Arp is not alone,
Yes, he is.
but he is cataloging anomalies on red shift to build the case.
So is every other actual astronomer out there (hundreds or more) who makes this their specialty. You know what the handful of anomalous observations mean to them? They have a bad measurement. Or some other unknown conditions (like a quasar that "appears" to be in front of a nearby galaxy) are interfering. You have .01% of observations that don't quite fit, and the reasons are far from settled, yet two or three nuts go on a rampage to demolish fundamental physics because what they really don't like are the facts of nature as they are. An expanding universe pisses them off. Like it did Einstein, Hoyle, et al... Tough shit. They'll get over it.
Either way, why not try to build a case against redshift? Isn't that the point of science?
NO! The point is to learn new things and find theories that fit the observed data. The better the fit, the more likely the theory is correct. A teeny percentage of observations in a field (astronomy) with many unknowns and no way to control for them means nothing. Ever hear of the deicrepancy between the ages of the oldest stars and the age of the universe? Look it up.
If something is true no case against it can stand. If you fail to build a case against it then you help prove it's validity.
Good. Have fun. But that's only what wackjobs do. Actual scientists know what are
real problems with a theory and focus on those. Like the flat rotation curves of galaxies, or the apparent incompatibility of gravity with QM.
What Arp is arguing is that redshift is greater in newly formed stars and, if this is true, that means that redshift has more variables involved than just speed and distance.
So I ask you, what is so irrational about that argument?
Everything. There is zero convincing evidence that there is a fundamental problem with our understanding of how redshift occurrs. Is it that it's so exciting to think that there's something fundamentally wrong with everything? If you only knew what us being wrong about how redshift happens...
But that's no argument. There's zero reason for real astronomers to question the extremely well known machanisms of redshift. If you all of a sudden find incontrovertible proof that redshift dosen't work the way we think (akin to finding out that not only were you adopted, but you were really raised by wolves for your entire childhood) then we'll talk.
The reason that these few nuts are alone is not beacuse they have "controversial" theories, but that they are ignoring the basic idea that science isn't about being pissed off and coming up with counter theories just because you are so pissed off.