It does show a red light, but how long is it going to take for someone to hack that and turn it off? Basically, you should just not interact with anyone wearing Google Glass, other than to ask them to leave your place of business.
That's because you chose to misinterpret "constantly" as referring to putting the apps he infrequently or never accesses rather than the other apps on the phone that he does. The rest of your post is based on that willful misinterpretation, so nothing more than a disingenuous attempt to score cheap points. I'm beginning to see a trend with your "arguments".
There's a chasm between, "I'd argue that," and, "The same is broadly true." The former is idle speculation based on unsubstantiated opinion, the latter an assertion of fact. You haven't even strung a line across that chasm, let alone bridged it.
It's all part of the same argument: The stock apps as a whole guarantee a distinct user experience out of the box, and belong in the firmware. Apple has other apps that are not part of that experience that can be downloaded and installed from the App Store, and deleted. But, as pointed out, you haven't made an argument as to why your personal desires would be a good thing for Apple or the majority of users.
It's not just a grander scale, even though that's what your argument hinges on. In addition to a difference of degree, it's also a difference of kind. The apps that companies install for employee use are not part of the general smartphone experience, but are specific to the companies business. And, yes, carrier specific apps exist today in the App Store; they aren't forbidding them from offering apps, just from taking over the entire user experience on the phone.
Unfortunately for your point, people don't have iCab, Chrome or Opera on their phones out of the box. So, in your scenario, people would essentially have to spend a few hours browsing and downloading all the apps they need from the App Store before they could really do anything useful on their phone. Or, say they download Chrome, delete Safari, then somehow for some reason delete Chrome, now, again, things aren't working so well. The same goes for Mail, and a number of...