I'm going to mute my special needs coworker while on a business call.
Why do you want to do that?
I believe these people are distracting and can spoil the team atmosphere.
It's extremely inappropriate to ignore your coworker because they have special needs. You should treat them with respect and give them an opportunity to do their job.
So do you think that it's okay for these people to make noise and be distracting?
It's rude to assume is all they do is act distracting. If they're working the same job you are then they are qualified to be there and be heard as well. That means listening to their input when they're ready to give it.