Is it true that you shouldn't push someone who has ASD to be more independent?

"My brother has ASD and dyspraxia. I can’t help but feeling that my Dad is halting his independence. My brother has traveled to London with my dad on average every month to spend the weekend with our mum since he was 6 my mum met them in London as the half way point and took him to her home on the Isle of Wight. Since my brother was fifteen he has traveled to the Isle of Wight from London alone (thanks to my mum encouraging his independence) this involves a coach and then getting onto a cat across to the island. He is now 20 and my dad still say's that he is not ready to travel to London alone (1 train, no changes, no underground) "London is a scary place" he said. I think my brother is capable of doing this alone easily. I asked my dad when was the last time he asked my brother if he thought he could do it alone and he replied the last time they went my brother said he preferred to have dad with him. My dad said he doesn't want to push him to do something that he's not comfortable with. I replied that sometimes everyone needs to be pushed a little, he replied "EVERYONE DOESN'T HAVE AUTISM". My brother was pushed slightly to do the second part of the journey alone and is fine with it. Is it true that you shouldn't push someone who has ASD to be more independent?"
 
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