You are right .and it’s one of the things I like about the show.
Sheldon’s mom is portrayed at times as a kook, but definitely comes off far better than any other parent, injecting her wise ways into any number of shows. She “handles” Sheldon’s peculiarities with an easy grace that no one else can.
I reference BBT and Firefly by Joss Whedon. On that show, Shepherd Book is portrayed as a much more than decent human being, despite the fact that none of the other main characters seem to particularly agree with him.
I don't know about Chuck Lorre of BBT, but Joss Whedon is a well-known atheist. Yet he portrays religious people, even Christians, fairly in his shows.
All I want is for Christians to be portrayed in the media with the respect normally shown to Jews, Muslims or Hindus.
OMG, yes... I LOVE Sheldon’s Mom. How she didn’t get an Emmy I’ll never figure out.