The other feature I miss is screen time requests. This one is kinda weird - I’m sure there’s a reason they’re blocked, but it’s a message from Apple (or, directly from a trusted family member? I’m not 100% sure how they work). I still _recieve_ the notification, but it’s not actionable.
While I share with your frustration, though, I do understand why Apple might want to have it as “all-or-nothing”. If they allow users to enable even one “dangerous” setting, that ultimately compromises the entire security model. An attacker doesn’t care which way they can compromise your device. If there’s _one_ way in, that’s all they need.
Ultimately, for me the biggest PiTA with lockdown mode is not knowing if it’s to blame for a problem I’m having. I couldn’t tell you how many times I’ve disabled and re-enabled it just to test something that should work, or if it’s the reason a feature/setting is not showing up. To be fair, most of the time it’s not the issue, but sometimes I just need to rule it out.
This feature has the benefit of teaching users (correctly) that browsing the internet on a phone has always been a terrible idea.