

As always, the dose makes the poison.
A common scenario is people picking the wrong species and then not just eating a small bite, but cooking an entire meal and eating that.
A small bite may not kill you, but just one mushroom (50g) can be enough to do it.
There are some toxic mfs out there and they can be mistaken for edible lookalikes by inexperienced foragers.
They also usually assume a lot about the users’ knowledge of the domain of the program itself.
In my experience, many programs’ man/help is very brief, often a sentence or less per command/flag, with 2 or more terms that don’t mean anything to the uninitiated. Also, even when I think I know all the words, the descriptions are not nearly precise enough to confidently infer what exactly the program is going to do.
Disclaimers for potentially dangerous/irreversible actions are also often lacking.
Which is why I almost always look for an article that explains a command using examples, instead of trying to divine what the manual authors had in mind.