It’s not entirely wrong. Way back in the Next Killer App bubble, I signed a lot of NDAs only to find out there wasn’t anything worth disclosing. I think I am actually violating one of my NDAs to recount the time a guy offered me stock options to build a website that looked like Google with ads. It had a search bar, would return Google search results, and was otherwise riddled with ads. He got the idea from a porn search engine. I put on a suit and tie to meet with the guy. Didn’t have any capital, nor did he own the domain he wanted to use, and I wasn’t a web developer. But he was willing to give me 3% if I built the site for him and helped him find advertisers, because he didn’t have those, either. He was an idea man, you know.
Anyway, that’s not the norm anymore, and NDAs are perfunctory when protecting actual company information.