Earlier quoted context omitted.
"Extend your intuition to imagine that you have perfect competition where there are infinitely many identical goods all competing to the lowest price either no differentiation, and people will price at zero profit. " But this is not reality. I doubt doing abstractions like these are helpful in understanding anything, when the base is so far off.
Yes nobody is denying that these arent reality. They're models, and you get far more sophisticated models after econ 101
"In a perfect free market the oil producers make zero profits"
where this statement does not make sense, unless you apply weird economic definitions.