Depends what you mean by "similar issues"

If you mean "a bunch of relatively new Android phones not getting security updates because their manufacturer doesn't support them", then yes. Apple is actively providing not just security patches but entire feature software updates for the iPhone 6S, which is 4.5 years old at this point.

Yup, that's what I mean. While I do have an Android phone that is patched (Samsung), I understand that many people will be hmm... irritated that this vulnerability won't be fixed and requires them to upgrade. I'd not treat switching to Apple ecosystem as panacea to everything though and would be more for security through audit, not obscurity.

Apple's security is heavily audited in a lot of ways. They give special phones to researchers that make it easier to audit them, and there are significant bug bounties.

> They give special phones to researchers that make it easier to audit them

Did this already happen? I only remember the announcement and then researchers on Twitter complaining that the first one is yet to be seen.

There a couple of alternative solutions, from convenient to effort needed :

iOS ecosystem. Since Apple is a hardware manufacturer foremost, you notice from the start you aren’t the product. Lots of apps, many of high quality.

Librem/Pinephone : Linux phones. While the hardware is still closed source in certain parts, it’s a step up from what we have now. Librem allows you to install any linux variant you choose.

Zerophone : Build your own phone basically, very cheap to build ($50) , and currently in development.

There's tons of security researchers focusing on iOS and the lack of source code access is merely an inconvenience.