I believe there were FUD pieces like this when internet search engines were rolled out, and again when social media became popular. I suppose its universal for new technologies.

I had an interview awhile ago at a place where during the phone screen "they can't talk about their tech stack in detail" so I looked on linkedin and figured out their entire tech stack before on the onsite interview. Come on guys, according to linkedin, you have an entire department of people doing AWS with Terraform and Ansible, you don't have to pretend you can't say it in public.