ILD - children who are disabled have the legal right to certain levels of care and support. They don't lose that legal right because someone else needs some care as well.
How would you feel if your child came home with a letter which said
Dear Parents
We have been informed that the LA no longer has enough money to teach all the children. Therefore to make it fair and ensure everyone gets access to some education we propose to teach teach class 3 on Mondays, Tuesdays and Wednesday AM, and class 4 on Wednesday PM, thursday and Friday'.
What would you do? Say "oh that's ok because others need it too. If course your wouldn't.
Or your child turns up at A and E with a broken arm, but 15 children have already been seen with broken arms that week so you need to go home and come back in 2 weeks time.
Acceptable? Well that's your argument.