I should have phrased 5 more like an argument (because liking Amber is not an argument against supporting an alternative, I like Amber myself too!), because perhaps people who say that in fact want to say something like:
"I think every person should have a phone with Amber installed and only use Nostr apps from that phone and the absolute requirement for ever thinking about using Nostr is that you have to first install Zapstore then Amber and promise you'll never uninstall that, never lose your phone to someone that will steal your key, and that you'll keep a paper or steel backup of your nsec at home at all times."