From a government perspective they are. If you ever try to immigrate to one of the "desired countries" you'll quickly find out how worthless the average worker is in the eye of a pen pusher.
Try to immigrate to the US and see how true that is. I'm also in a profession sources like that state as being skilled work but come application time, I was deemed worthless due to my profession, despite there being an outcry for workers.
The answer to this point is in a comment further down. But the point you're missing is how often professions are downplayed as unskilled. Someone messes up in my field and someone dies, but that's considered unskilled despite it being a profession where there's constantly an outcry for more workers.
I’ll give you farm-hands, and there are plenty of manual labor jobs that fall under the unskilled category, but bricklayers certainly are not among them. Simply a poor example in that specific case. The rest of the graphic is fine.
A lot of farmhands operate million dollar combines and tractors pulling additional millions in implements. If a heavy duty equipment operator is "skilled" then you might have to rethink that one.
Not sure farmers and bricklayers are considered unskilled…
Your reply:
Very certainly farm-hands and manual laborers are (unskilled).
Maybe read that again and see if you can understand why I came to the conclusion you were agreeing with that poster. I don't expect you will change your mind, but in my experience, you modify the adjective to what you would want your statement to agree with, and in the absence of changing it, you're just carrying on with that adjective.
Edit: I'm not here to make an argument, but explain why I thought you were saying the opposite. I'm not going to reply to anything here, because you're apparently thinking the worst of anyone that comments in a way you take to be adversarial. So, carry on.
Did you know that aircraft mechanics were considered unskilled labor until the job was "reclassified" during the Cold War due to the demand for laborers?
From a cultural sense, both farmers and bricklayers are absolutely considered unskilled by the general public. The average person makes no difference between the generic construction labor usually done by illegal immigrants (in the US) and a bricklayer.