FWIW the death sentences passed on 183 people in Egypt did get a lot of coverage and condemnation here in the UK. I wouldn't read too much into stuff being picked up here on HN - it is pretty random.
With respect I disagree. The most metallic of tinpot despots still believes themselves to be righteous and want to be loved and admired. Amnesty International's experience is that such rulers care sufficiently when a bunch of ordinary people write them letters for that to be a worthwhile thing to do in support of political prisoners. Worthwhile along useful dimensions like stopping torture and so on.
I don't think some country's ruler gives a damn about coverage and condemnation, as long as it stops there.