It isn't
You don't want to be tricked into eating something else than you intended. Even ignoring the whole value of eating meat argument, there is an allergy problem in play
And, I've noticed that vegetarian products are being hidden more and more insidiously over the years. It's intentionally misleading and potentially harmful
That's just false. I've seen multiple people including myself and my so make that mistake multiple times.
Maybe it's packaged more clearly where you're from, but over here the difference is quite subtle