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Basically it boils down to he thinks we have talked about it enough and it annoys him how upset people are about it. And ultimately he considers admiring the technology used in war machines (and terrorism like the pager attack) to be clearly within the editorial remit of HN but that discussing their effects on the people they are used on is borderline so they police it more vigorously.
It will be claimed that it's over something else, to maintain plausible deniability. Or that you were starting a flame war.
I'm just saying: this is one of HN's most protected third-rail topics, so I'd advise you to have a backup account and a VPN handy if you want to keep stating the obvious and standing up for the voiceless.