If people move away from a product because more security vulnerabilities gets found and fixed, they are stupid.
Reminds me, I just read a blog post from a major company marketing their products as privacy-respecting, where they argued that Google downprioritises users' privacy (which could of course be a legit assertion if argued convincingly), with reference to the number of security vulnerabilities in Android that got patched this month.
It should be obvious that the number of CVEs in a security bulletin is hardly evidence of anything.
Upstate1618 If you are getting an iPhone, first of all make sure that the model is still supported with iOS updates, and look up for how long it will be supported. I'm not familiar with iOS development so don't really understand what all of the instructions you provide actually imply, so can't comment on that, but I think using a supported device is the bare minimum for security/privacy.