I've been a student of that blog. It doesn't ignore cosmological redshift. Rather, the dark energy solution notes that space measurably expands, but in a relative (it depends on the observer) way as opposed to the absolute (observed by all observers) way that is generally accepted today. When space measurably expands (whether relative or absolute) you have cosmological redshift.
Space itself not expanding is the absence of an assumption. Today it's generally accepted that space itself expands, an assumption.
> Add in the fact that that the article appears targeted towards laypeople and there's no scientific paper to be found suggests that it's more psuedoscience and thought experiments than actual scientific investigation.
Thought experiments are scientific investigation. Nothing in the rest of your point actually suggests pseudoscience.
Space itself not expanding is the absence of an assumption. Today it's generally accepted that space itself expands, an assumption.
> Add in the fact that that the article appears targeted towards laypeople and there's no scientific paper to be found suggests that it's more psuedoscience and thought experiments than actual scientific investigation.
Thought experiments are scientific investigation. Nothing in the rest of your point actually suggests pseudoscience.