You can still use your own screen protector, though.
One of the big changes Nintendo made with the Switch OLED is one you might not realise when you first pick it up: the screen is made of glass and not plastic, as was the case with the original Switch and the Switch Lite.
The reason you might not be aware of this fact when you use the console is that Nintendo has applied a very discreet “anti-scattering adhesive film” over the glass which prevents it from breaking into thousands of dangerous bits if it gets smashed. It also provides protection from scratches.
Read the full article on nintendolife.com