They have to honour the license. Which provides and guarantees basic freedoms. But it allows the code to be reused in any project honouring the license. So your initial statement is false.
Nope, my basic statement is true. You didn't answer the question and by "code" you don't just mean the GPL code. The GPL tries to affect all code in the project not just the GPLed code.
They cannot be included because they take over everything else. It is not a lie and the questions I have asked backed that up. GPL imposes things on code that is not GPL.
"They can be included in any project that can honour the GPL."
So, no and not a lie. Why should any license dictate what happens to code that was not written by the authors of that code? Why should I pay more honor to GPL code than any other? So, no, much like a relative that drinks all the beer when visiting, the GPL cannot be included except in limited circumstances.
So, yes. You are simply talking bullshit because of some irrational GPL hate. If you cannot honour the license of a piece of software then you can't use it. Doesn't matter if it's free software like GCC or some commercial library you paid a shitload of money for. Stop being dishonest and irrational.