Car seat inserts... unsafe?

Hannah • 💍 married in 2018. 🤰🏼due with our first 11/18! ✝️ loved and blessed by Christ.

I bought a car seat insert for my baby’s car seat and now I’m seeing articles about them being unsafe?? Are you ladies using them? I’ve never heard before that they’re unsafe. I’ll include a picture of the one I have.