I don't think it's that absurd of a statement, really. In general, men want to date women shorter than themselves, and women want to date someone taller. Even in your own example, you said tall men prefer taller women, and the basketball player that you dated was still shorter than yourself.
That's not to say that tall women are undesirable. I'm sure Victoria Secret models don't have any trouble getting dates lol. But unless you're that physically attractive, it probably does limit your range to people who are your height are taller. Most women don't want someone shorter anyways, though.
Let's make it really simple.
Most women will not date a man shorter than themself. Many women here and elsewhere have expressed the idea that height in a man is very attractive. From my experience, women will only date shorter men if the man is very rich or very important.
The number of tall women is very small. I have heard tall women complain about the small pool of men they have to date. Tall women often criticize tall men for not dating tall women.
From my experience, short men have an extremely difficult time even getting a date unless they are wealthy or powerful. The ones I know are in no way put off by the height of a woman. It is only prejudice of many women that hurts the prospects of the typical short guy.
As to men, most are not overly concerned by height, unless it is extreme.
Therefore, it is women who are in control of the dating parameters in regards to height.
Now, when tall women complain about tall men dating shorter women, it is because men are not prejudiced like women typically are.
So, to call it "gross" is a stupid comment, projecting on to men the prejudice that many if not most women have.
To call it "sexist" is to label women, not men sexist.
To call it "kind of misogynistic" is anything but accurate.
And to say "men always want to feel superior" is extremely misandric.
TL;dr: women typically like taller men; men typically don't care about height.
Tall women are typically limited by their own height prejudice; tall men are typically not limited to only tall women by pursue women of all heights.
Short women typically are only limited in pursuing extremely tall men (less than 4% of men are 6'4" or taller.
Short men are typically limited to only shorter women (by the prejudice of women), unless the men are wealthy or powerful.
The poster I quoted made an extremely poor statement.