Macbook air 2018 retina display keyboard cover

Does a screen protector keep the screen from being damaged by a keyboard top case?

According to some saying, the screen could be damaged by any accessory between the keyboard and screen because there is a coating on the screen. Then anything between the keyboard and screen would hurt the coating the leave a scratch on the screen. So if I put a protector onto the screen, does it protect the coating from being hurt? Or does the back-adhesive protector itself hurt the coating (because it is adhesive)?

• This was asked before. I’m wondering if the question was ever answered.