The model Y has mechanical emergency door openers in the front. Not in the rear. It complains about possibly breaking window trim when you use them.
They are not super obvious though and you’d have to know in an emergency.
Yeah the releases in the 3 and Y aren’t too bad. Most people use them by mistake once or twice (and get the warning about window trim).
The X however is unforgivable. You have to pop off the speaker grills to get to them and then the door also weighs a lot and has to be manually lifted upwards.
No, on the X there is a lever just below the open door button on the front doors. I have seen multiple people use it instead of the button because the button in the front door is less obvious to them then the lever.
Same with the Model 3.
I have to disagree with them not being obvious however. Nearly every new person in my Model 3 goes to grab the emergency release immediately. I even added vinyl door open stickers next to the button to make it more obvious and it still happens almost every time.