In schools no matter how robust the hardware, the kids will destroy them. You'll have to buy a whole new set next year for the new kids anyway.

Apple started as a hardware company, with network services coming MUCH later.
Google were always a network first company.

There are also no shortage of concealable cameras...
A big pair of ugly glasses is obvious, you might as well be carrying a full size video camera. You can see it's there and behave accordingly. A pervert is more likely to use a small hidden camera.

Following is massively easier than leading...

If someone else has already done something, then you know it's possible and just need to work out how. And the more information you have about the existing implementation the easier it is to replicate it, as even very minimal high level information is going to steer you in the right general direction.

If you're leading then you can't be sure what is possible, you could spend a lot of resources chasing dead ends.

Most of the theatres here have extremely uncomfortable seats. A small handful of them have decent seats and charge a premium for them.
They also try to sell you large drinks, which cause you to need the toilet, so you either sit there in discomfort needing the toilet or miss a chunk of the movie. If the movie is long then your drink will go cold (or warm) and not taste good.

At home i have a comfortable seat, i can adjust the volume to suit my needs, i can pause the movie if i need to visit the toilet or get another drink etc, and there's noone else there to distract me.

That sounds more like a bug or dropped support for older hardware.

No it doesn't. Monitors already have standards for reporting their capabilities and this works just fine on linux and mac.

A structured database, with separate code to query the data and perform calculations if needed.

There are very few cases where a spreadsheet is the best tool for the job, in most cases it's the only tool the user was given so they came up with some frankenstein mess.

You can't that's the point.
If someone can view the data, they can copy it. The only way to "secure" it is to prevent them from viewing it in the first place.

Any attempt to allow viewing while restricting copying or modification is theatre at best and only provides a false sense of security. At worst it's actively harmful because users who naively rely on such systems often end up taking less precautions than they otherwise would have.
There are _ALWAYS_ ways to bypass such systems.

Anything can fail, which is why the whole point of a backup is to have more than one copy in different places.

There is absolutely no reason that work and other mandatory things cannot be done at night, leaving the daytime free for you to do your own things. Wasting what limited daylight hours we have stuck in a cube farm with artificial lights anyway is ridiculous. There are very few jobs that actually require natural light these days.

Further from the equator there is not enough sunlight for that. You'll either be going to work/school in darkness, or coming back in darkness unless you want to severely shorten the duration of the work/school day.

The sun always rises later in the winter, that's the nature of winter... The only thing this changes is the arbitrary numbers that are displayed when the sun is rising.
Instead of fixating around those arbitrary numbers, plan your day around actual environment factors like when the sun rises etc.

The root of the problem is rigidly tying people's daily routines to an arbitrary set of numbers, and then changing those numbers rather than changing the routine.

Assuming that CGNAT makes you immune is a huge error.
Once you compromise a single customer you're now inside the CGNAT pool, where you will see lots of very vulnerable devices because they were left vulnerable on the assumption that they were not reachable. In an ISP with thousands of customers, at least a handful will have some infected devices.

Modern Windows devices absolutely do not become compromised via inbound connections to open ports, they become compromised via vulnerable client software or user error (eg phishing, malware infected downloads etc), all of which only depends on being able to make outbound connections.