I don't think "it looks sketchy" really answers the question "what do you think looks sketchy about this?"
. And is there anything at all that you can't find people being skeptical about on the internet? Because unless it's people who are verifiably technically knowledgeable who have doubts I would not attach much importance to that.
Seriously, there are lots of system processes which you can't open as an app because their function doesn't require a user interface and indeed it wouldn't make any sense to provide one. And it's the same on all phones and all computers running all operating systems. If you can't see that on a particular device or platform it's because the manufacturer has chosen not to show you that these things exist, not because they aren't there.
So the lack of description? Well that screenshot came from Settings/Apps, which doesn't describe
any apps, so there's nothing suspicious about that. You find app descriptions in the app stores, but system components aren't updated that way. So the lack of description isn't a sign that something is dodgy, it's just that the places you'd find user apps described don't manage system components. If you want to know more then you can try searching Google's android developer information, or maybe visit a developer forum like XDA and see if there's anyone there who happens to know. But I have sympathy with manufacturers not adding user documentation for every system component when most users will never know they exist and would probably not understand the documentation if it was provided (not because they aren't smart enough to understand, but because most people have never had to learn how a computer works, and so wouldn't have enough context to understand what a lot of system processes do even if you described it to them).
Of course you could tell Google (or Samsung, Microsoft, Apple, etc) that they need to include full documentation on all of these system processes because you have every right to know. They'll ignore you, but if enough people tell them that they'll... well frankly they'll still ignore them
. But if they were to actually do anything they'd most likely just remove the "show system apps" option so that users wouldn't know these things existed and hence wouldn't ask. To be honest I'm mildly surprised that Google didn't just do that in the first place, since that's the easy option.