This thread has gone very strange.
My understanding is @noblegiraffe isn't saying a small room is never needed - just that it isn’t always needed for all students with an agreed adjustment? However, some schools do apparently choose to put all their students who have an adjustment (such as extra time) together in a separate room from the main exam hall.
There’s lots of sad and worrying posts that are coming across as “why should your kid get an advantage - mine should have some extra time too”. When talking about young people with a mental or physical need for a reasonable adjustment to be able to sit a compulsory exam.
And no acknowledgment from these posters that, as many PP have said, the workplace and life as an adult is very, very different from being in the school (and exam) system where everyone has to do the same thing and you have no autonomy as a child. Employers can use the interview process (including tests if relevant) to work out if the candidate is suitable for the job. The candidate can choose which jobs to apply for and can ask for reasonable adjustments when in post.
@catbathat must be on the wind up. No-one can actually be this obtuse.