that's not what landlords are. That's the construction company or the building manager and he or she's indeed doing a great service. Landlords are absentee owners who extract economic rent. You can of course, like say Vienna, nationalize most of the housing stock and hire people who provide actual services just the same.
Set up is a phrasal verb and omitting the space is incorrect, yes, but only an annoying pedant would point it out.
It recommends Debian and says:
>I make my guides on this site for Debian 11. If you use another OS, just know that your [mileage] may vary in terms of you might need to change some instructions here minorly.
If you were going to complain about bad grammar, that sentence is a much better target, and yet it is still quite easily understandable.
* landlords aren't a good thing.
* "setup" is a noun.
* It'd be helpful to offer some context. For instance, talking about ufw without even mentioning that we're talking about Linux, or even a specific Linux distro, would make most people confused. Same with apt.
These are good guides, but it should be kept in mind that they don't try to teach you anything - they're more guides to simply follow, and if you happen to learn something along the way, great.
But it makes sense to have guides that just tell you how to do a thing and don't explain it, because that represents a good chunk of the people out there. It wouldn't be bad to have links to stuff for those who want to understand what they're doing, though.
Overall, we need more sites like these.