Not true. As long as a student has a documented disability, the college or university must give a reasonable accommodation. I'll give you an example:
I have a friend who is a straight A and B student. She suffered from Leukemia before entering college and is still dealing with the side effects of chemo and graft vs. host disease. She needs extra time to test and because of her immune system issues and numerous doctors appointments, she needs a modified attendance requirements. These were all provided for her- before she ever had an issue. She took the time ot talk to the office at school that handles accommodations and so has never had a problem.
Having a disability is one thing, having poor fine motor control is another. Trust me, it isn't that cut and dried. We have tried for YEARS to get help for DS14 but it keeps coming down to the same thing, he is a straight A student and doesn't qualify for any "special ed" or accommodations or OT/PT as a result. There will be no "documentation" to produce. Fortunately we have had good luck talking to teachers about this issue and they have, for the most part, been pretty good about overlooking the handwriting issue but not all have.