we don’t know but if I had to guess labour is trying here to redistribute SEN spending away from ‘mild’ needs to moderate and complex, whilst also mainstreaming more kids.
their (internal) narrative will be there are lots of middle class parents who’ve got EHCPs for their kids at the expense of other kids.
they’re not listening to HTs or SEN campaigners - mild disability can still severely hamper your life chances and really, accepting it’s a zero sum game is a terrible starting point.