So should soldered CPU always be judged for repairability too? It's also the same repairability/efficiency tradeoff against using socketed (desktop) CPU instead.
This could be because iFixit is trying to be more consumer facing so they can sell more of their repair products. A wild guess. More likely that they're getting paid by these manufacturers though.
Maybe designing a computer with 10/10 repairability and 10/10 power efficiency isn't possible. That doesn't mean we should dilute either of those metrics to make it look that way.