My DD is partially deaf, has hypermobility syndrome, has GDD and Moderate Learning Difficulties, has Autistic Traits, has Sensory Processing Disorder and Auditory Processing Disorder...
She is in NO WAY severely affected enough by her SN's to be given one of the 30 places per year group, across 3 SN schools, that are available within a 30 mile radius of our home.
Most DC's with Down's here are educated in MS until at least the end of Y9. You have to have profound medical issues and other disabilities, and often need 2-1 support to get one of the 30 places available.
Inclusion HAS to work, as there just aren't enough alternatives. And people with my DD's issues are already segregated enough by spending almost 30% of their time at school working in the Learning Support area, without being forced to be in there 100% of the time, without access to the same curriculum in lessons like Science, or PE, or music, Drama etc.