Reading is fine, typing is not
You can read a mirrored page. Slowly, leaning slightly, but you can. Typing into one is a different problem, because your hands know exactly where the keys are and the screen keeps insisting they are wrong. Watch the field on the page as you type in the box: the letters run away from where you expect them.
There is a peek button. Hold it and the page flips back for as long as you keep holding, which is the closest thing here to cheating.
Why it lasted
It started as a novelty in the early 2000s and then found a genuinely practical use in places where the normal page was unreliable and a mirrored copy was not. That is why google mirror search and google search mirror are still typed as though they were features and not a joke.
People also run games reversed for the difficulty. A mirrored zerg rush is meaningfully harder because your aim is inverted along with everything else.
Try both axes
Flip vertically as well and nothing helps. Tilting your head does not work, holding up a phone camera barely works, and the only real option is to give up and press the button. Worth doing once.
If you want a legible throwback instead, google in 1998 is perfectly readable and a quarter of a century out of date.
