Basically it means that when you are born you pick a random amound of traits (with different intensity each) at random from a big bag of autistic traits. Of which the most common are the ones you mentioned. Special interests and different body language are guaranteed.
For example I don't have a very strong preference for routine (but it wasn't nice when my parents rearanged furniture in the kids room), I only am overwhelmed by wearing socks a little and sound a lot, like when I was at a hospital and 3 people started playing music from their phones at the same time I had to run away from the room and
I have a wierd body language but I'm very social, though have trouble keeping in touch with people (can be managed using a calendar reminders but it still feels like a chore).
With age you learn to cope with them (some don't do it), like I learned to compensate for my death stare (consiously managing where I look), it is still wierd but less intense. This causes anxiety.
For example I don't have a very strong preference for routine (but it wasn't nice when my parents rearanged furniture in the kids room), I only am overwhelmed by wearing socks a little and sound a lot, like when I was at a hospital and 3 people started playing music from their phones at the same time I had to run away from the room and
I have a wierd body language but I'm very social, though have trouble keeping in touch with people (can be managed using a calendar reminders but it still feels like a chore).
With age you learn to cope with them (some don't do it), like I learned to compensate for my death stare (consiously managing where I look), it is still wierd but less intense. This causes anxiety.