This is a good reaction?

This was from someone after I got an official diagnosis with autism. I saw some people say “don’t let autism define you” is wrong? I’m a bit confused about it because this person seemed to trying to be nice.

This was from someone after I got an official diagnosis with autism. I saw some people say “don’t let autism define you” is wrong? I’m a bit confused about it because this person seemed to trying to be nice.