In the past, laminated glass was usually installed in the windshield, with side and rear windows being tempered only.
The difference is that tempered glass is per-stressed so that when it cracks, it shatters into many tiny and dull pieces. Laminated is the same thing, but with layers of plastic sandwiched with layers of tempered glass. Laminated glass will still shatter, but will be held together by the plastic layers.
In an emergency, small improvised, or purpose built tools meant to shatter tempered glass will be useless if the glass is laminated.
It’s still possible to open it before the car submerges. It’s also possible to open it if you have the wherewithal to wait until the inside is nearly full. That’s providing you know where the damned release lever is. But if you’re panicking and pulling the electronic release and nothing happens then you’re going to die no matter what. Same too if the car is on fire or whatever.