It's so unrealistic, like they've never met a scientist or engineer. Any show by Chuck Lorre seems awful and manipulative.
There was a show that the creators Lorre and Bill Prady sat down and talked about the characters they were writing about. They said they each knew at least one person who was typical of each of the characters on the show.
They explained that the tv characters were atypical of the average physicist, engineer or what have you but the examples were pretty common.
I think it was Prady that came up with the Sheldon character. He knew a guy just like Sheldon. No clue about humor, satire, or females (much less sex) who ended up very successful and married to an extremely beautiful woman with whom he had three kids. Even after all that the guy was clueless about everyday human interactions.
Do you maybe have a thing against Lorre himself instead of his shows?
He does stick to a formula that tends to work.