Straight to Kindle noir

Is a self-published digital book eligible for a review, particularly a negative review? Is it "piling on" to say negative things about straight-to-Kindle crime fiction? And when does a book pass from "promising" to "a few hours of my life I'm never going to get back." Maybe it's not fair to start a review with questions like that, anyway. I picked up a free Kindle book called Extreme Malice, by R.E. Swirsky, which seemed to be a legal thriller or a "perfect crime" story (or possibly something else entirely) set around Calgary (a city I've visited and about which I've only found a couple of crime novels). It sat in my Kindle for a while and yesterday I finally got around to opening it. It starts out slowly, but a lot of books do. More troubling, there is a lot of repetition in the language (spots where a pronoun would be fine, but a name or noun is used repetitively instead). But the plot was OK, as Jack leaves on a business trip o...