Because these statements are correct, despite not aligning with your view. And you don't like being wrong.
I'm 100% certain I'm more qualified to make a judgement about this than you.
No intelligent person would take such a sweeping characterization of an entire academic institution like this seriously.
You've just lot all credibility.
Just for fun, however, I'll address the rest of your nonsense.
Even if CU were a "middling state school," it does not mean it is a "absolutely and totally a mediocre academic institution." A middling institution would mean it is neither great, nor bad, but rather, average.
The fact is however, it isn't a "absolutely and totally a mediocre academic institution."
It does not follow from
"They accept almost 90 percent of all applicants."
that
"CU is absolutely and totally a mediocre academic institution"
That is not a valid argument.
It does not follow from
"The 4 year graduation rate is only 44 percent."
that
"CU is absolutely and totally a mediocre academic institution"
That is not a valid argument.
It does not follow from
"The school is ranked 88th by US News and 118th by Forbes."
that
"CU is absolutely and totally a mediocre academic institution"
That is not a valid argument.
It does not follow from
"The vaunted engineering program that people cite is not ranked in the top 30 nationally for undergraduate programs."
that
"CU is absolutely and totally a mediocre academic institution"
That is not a valid argument.
You've thus far shown yourself incapable of giving a valid reason why the statement:
"CU is absolutely and totally a mediocre academic institution."
might be true.
You also made a statement that no rational being would take seriously.
Thus, the points you've raised do not further your argument and can be dismissed.