Tell me about it. It's like trying to discuss the subtleties behind the COVID pandemic - whether the virus was natural or engineered, whether it's harmless or deadly, how many strains there really are, etc. - with the guys going "viruses aren't real, ill health is caused by being a bad person". And I wish I was exaggerating here.

Now, let's see what the ruckus here is all about. Looking at the angles of the "corridor", it looks to be narrowing to a point barely a couple of yards inside. It might have formed naturally, for instance if there was outlying rock, and a boulder fell on it and chipped it off - there are similar right-angle rock formations on Earth, so that's not too unbelievable. And it would explain the smooth flat "pathway" just outside - this was where the original rock ended.

That said, the small rock "awning" just outside the entrance is unlikely to have survived a hit from above. The hit could have also come from the side, but I'm not sure if even the Martian sandstorms could carry a rock large and heavy enough to do this kind of damage.Although the rugged erosion on the surrounding rock looks exactly like the result of highly aggressive sandstorms, compared to the smooth formations known on Earth, like in the American West.

Bottom line - it can be natural, but the surrounding area would likely show similar phenomena - chipped-off rocks and flat "walls" or "floors" from where they used to be. A panoramic shot would be useful right about now.

Whatever it is, though, it's recent. Likely less than a decade old, judging by the stark difference in erosion compared to the rest of the rock. Which is probably a good reason to move the rover away from the place, because the kind of sandstorm that can create that sort of mayhem, would turn it to scrap in seconds.