I found that during undergrad, my school was extremely cryptic about the kinds of things one needs to be doing to position oneself for grad school, especially PhD programs, and that lead me to get rejected from every school I applied to twice, before I then ended up in a master's program. I spent years wondering why classmates who seemed to know less than me were able to get into different PI's labs and I couldn't. The career office was useless and refused to collaborate with the disability office or any healthcare provider I was seeing on the outside, all while I was still trying to even figure out whether I had disabilities in the first place.
I've also heard horror stories of folks getting all the way through a PhD and then having the rude awakening that the odds of getting tenure somewhere are even more stacked against them than other people, as well as stories where people get into a graduate program and then realize they have no clue how to self-structure in the way it requires.
It seems we're just barely getting around to touching upon what neurodivergent undergrads go through. The result is that the research that really needs us suffers.