tc boyle frequently writes things like:
“He loved her. He did.”
Boyle is a decent writer...
seconding a lot of what's already been said, but there's a couple things here to consider:
1. "show, don't tell" is a guideline, and for very specific reasons.
"Sam hated her. Sam hated all women. Sam was a misogynist. Sam felt they should all be sex objects." even that can work, especially if it was someone else giving their relatively terse evaluation of sam, but 400 pages like that would read hollow, and clumsy, like a novel-length version of a Dick and Jane story. Especially if that was supposed to be sam's POV....do you think anyone thinks of themselves in such simplistic and negative terms? Someone writing about Sam FROM HIS POV might say something like
"The woman was fit, slim, and she would have looked perfect on top of him, hips rocking and tits heaving, impaled, doing about the only thing ANY woman was useful for in the first place. She was pretty. But she was also close to forty." the bit in blue tells you everything the bit in green does, and arguably more, about how Sam views women. He's not a nice guy. But specifics give you more insight into his reptile-brain, too.
So one reason for show, don't tell is to avoid an entire novel of boring-ass spoon-feeding. Or, as it is often used in talking about descriptive writing, to keep things from becoming boring as shit while you cover all possible bases.
2. there's also the issue of what Boyle, even there, said and why, which is hard to evaluate in a vacuum. Was it to break momentum? All tell (see above and descriptions, for example) can become extremely long, monotonous, and tedious. So sometimes you need various tools to break rhythm in writing, and ONE of those tools can be a simple line of telling.
3. Like I said, that line was in a vacuum. It could have been written about: a man pillow-smothering his own mother ant trying to convince himself it's about her cancer, and not the estate that long-term treatment stands to rob him of. The same guy, GENUINELY upset. A man staring at his new bride. Frank, from Shameless, trying to justify any number of shitty things he'd done to his daughters. In a lot of those cases, one might argue the line isn't telling at all, so much as actually showing, reflecting the character's motivations obliquely by saying something directly opposed to their actual actions to show their conflict, delusion, etc...
there's a lot of reasons one might choose to show. about the only one that's safely wrong is "well, so-and-so did it, so I can too" without any understanding of context. The "rules" are more guideposts, they are certainly not unbreakable, but they are also there for a solid reason....or reasons. Understand the why and you will, probably, find yourself wanting to follow them most of the time anyway. But there will also be lots of instances where you find yourself having good, real reasons to break them.