I mean, not saying that destroying their sound equipment was okay (referring to the video here), but the person who was the reason they walked out was making a shit point that is potentially damaging while not holding water at all.
Height depends entirely on genetics. While men are taller on average, a woman cis or not can be taller than a man (cis or not), and a woman cis or not can be taller than a man (once again cis or not) of the same family simply due to the hormonal setups while growing up.
Speaking of hormones, most of the things she went on to discuss are immediately affected by hormones. Fat distribution, these supposed brain differences... they are completely up to hormones. A woman, cis or not, can have higher amounts of testosterone leading them to be an exception to this average. An exception so common it would be unwise to ignore it and start speaking in terms of what men and women "are like". Same goes for men and low testosterone levels (essentially similar to high estrogen levels in practice).
Lactation? Some women cis or not may not be able to do it, some men cis or not may be.
If you wanna get into menstruation and other reproductive things my answer is simple: quite a lot of people of any sex and any gender are infertile.
Also some people who believe themselves to be cis their entire lives later find out they have a hidden vagina, or a random testicle or ovary, etc etc. Intersex people are as common as redheads. Noone is sitting around pretending redheads don't exist by turning the conversation focus to the differences between black, brown and blonde hair, now do they? That's essentially what this woman is doing except with sex and gender.
Of course we don't know what was said prior to this meltdown, but the signs we see in the video are not very promising for what may have come before and after. She was uninformative and ignorant of many important facts to the conversation, yet she pushed her mindset as undeniable fact to a whole room full of students. That is a scary thing to see.
Also the reason I kept saying "cis or not" in this post is because these variations I speak of are not only present if you include trans people in the equation (which you should), but also if you look exclusively at the biological side of things. People are so insanely different that making a differentiation based on an old idea of what sex is like is counterproductive and potentially harmful to all of us. If we want a medical system that works well on a larger scale, we need to stop auto-sorting people and start basing care simply off what each individual has, and what they can /cannot do. Otherwise some patients go without care they need, and other patients are offered care in a form that may be hurtful as it relates to a thing they wish they could do or wish they had, but don't.
Also, this argument is ridiculous to begin with because it's not like it's actually used to make healthcare better even for the most average/typical of cis people either. There's a huge hole missing in medical research in regards to how average women work, primarily for how they react to medicine but a lot of people are also unaware of what it looks like when an average woman has a heart attack. This is because the reaction we are all told about and shown in media is how average men react to a heart attack. This leads to many female heart attacks not being treated as fast as they should be!! Science, hospitals and society treats average women like "men with pesky hormones" and it ultimately hurts a lot of women.
The only way this argument is ever used in practice is to hurt trans people, intersex people and any cis person that doesn't fall into the stereotype.