They don't mention (4) here's how Microsoft solves this in Windows, or how Tesla solves the problem, either, and I don't think they need to. This text is about the problem of updating a billion phones, not of updating all other kinds of stuff.
I don't see how they would have to cater for what their readers infer from this text about open source at all, as I can't find any way they even suggest that Android is open source.
The only reference to 'open' I can find in the text is "open an attachment or download a file that's corrupt.". The closest I can find to "Android is open source" is "Google gives its latest version of Android to manufacturers, and they then tweak it as they please.".
I think anybody who makes the jump from that to 'they can tweak it because Android is open source' also knows enough to not make the further jump to 'open source is dangerous'.
I don't see how they would have to cater for what their readers infer from this text about open source at all, as I can't find any way they even suggest that Android is open source.
The only reference to 'open' I can find in the text is "open an attachment or download a file that's corrupt.". The closest I can find to "Android is open source" is "Google gives its latest version of Android to manufacturers, and they then tweak it as they please.".
I think anybody who makes the jump from that to 'they can tweak it because Android is open source' also knows enough to not make the further jump to 'open source is dangerous'.