>2. The complaints are all slippery slope arguments that governments will force Apple to abuse the mechanism. These are clearly real concerns and even Tim Cook admits that if you build a back door, bad people will use it.

I don't know how old you are but for anyone over 30 the slippery slope isn't a logical fallacy, it's a law of nature. I've seen it happen again and again. The only way to win is to be so unreasonable that you defend literal child porn so you don't need to defend your right to own curtains.