Fortunately the term "flagship" doesn't promise anything about support, patches or security.
It's just a word that means you paid more for having all the bells and whistles that the OEM could offer at the time, instead of going for the next-best model or such.
Fortunately, whether you can afford the best of the best with all the optional extras or a cheaper second-tier model doesn't affect the security of the device. And it shouldn't, because if you can't afford a "flagship" device, doesn't mean you can afford to get hacked either.
Unfortunately, while the security-update frequency ought to be comparable, it turns out that it's mainly comparably bad :-/
It's just a word that means you paid more for having all the bells and whistles that the OEM could offer at the time, instead of going for the next-best model or such.
Fortunately, whether you can afford the best of the best with all the optional extras or a cheaper second-tier model doesn't affect the security of the device. And it shouldn't, because if you can't afford a "flagship" device, doesn't mean you can afford to get hacked either.
Unfortunately, while the security-update frequency ought to be comparable, it turns out that it's mainly comparably bad :-/