? ...oh, dear....
Well...
1. It's a pretty girl. ?
2. What's her videos about? Nerd-Stuff? I wouldn't bet on it. ?
Of course there are youtube millionaires. But there are maybe 5 or 8 of them worldwide (I don't know and I don't care.)
Their videos are about something the masses are interested in.
The masses are interested in fluffy pets, sex, other people suffering and facebook, but not to change the OS on their system.
Most don't even know there are different kinds of OS, not even there is such thing as an OS. app. 80% of all user don't even configure anything about their system that was given to them. The desktop wallpaper, at most.
"What's a file?", "Backup???", "Copy-Paste? - Not now! I have no time. I need to type this text twice again. So please stop bothering me with this hacker shit!" ?
3. Doing 1€/1000 clicks does not necessarily means you'll receive 1€ for your very first 1k clicks.
If Google'd paid 1€ for every each 1k clicks, Google would already be broke. ?
And besides 4€/h ain't good wages for some who knows computer stuff you also need to respect the fact this may the case when you do not count your learning effort about videos but already doing them seasoned on a very professional level.
4. You have no proof for that to be true. (You're computer guy. You should know best: Don't believe everything a computer tells you! ?)
If there is a professionell made video telling you how great things are and how much money you can do without any work, did it occur to you this might be some kind of advertisment by Google itself? ?
Dude, in many magazines there are those little advertisments: "Make 8000 €/months by doing light work at home"

Why not call that number?
5. Nobody will/can prevent you from making a video about FreeBSD.
I'd already had checked out which videos about Freebsd already are on Youtube (there are some) and looked at the amount of clicks they have.
Spoiler: It's less than 35M ?
It's good you've discovered FreeBSD. And it's even better you find it's so good, more should work with it.
I - and I presume most others - share the point here.
But maybe getting good into it may have a better chance to earn money by using FreeBSD, instead of talk about it.
If you pick one or the other guy participating in this forum, FreeBSD, or wrote a software or a man page (not me, of course), and ddg("google") them a bit, you'll find the one or the other interesting webpage of interesting people, doing very interesting things.
And you may get one idea or the other what a guy who's capable in computers could do, instead of posting the 754,236,457,639th video on youtube.
Peace out.