system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Who] What are the Weeping Angels, really?

I have thought about this a lot, and come to the same conclusion that many have, which is that Weeping Angels are disgraced Time Lords, who have been made the way they are as some sort of punishment.  How this was done is a mystery, and unfortunately, there isn't a lot of hard evidence.  This theory came into being during The Master's second grab at power, when the Time Bubble was briefly opened, and a few mysterious Time Lords were seen maintaining the weeping pose.

It makes sense in the fact that Weeping Angels have time based powers and feed off of time energy.  In their first appearance, they seem to instinctively know that the TARDIS contained large amounts of time energy.  Is this because they recognized it, or is it because they have some sort of time sense?  Neither option excludes the possibility of their being Time Lords.

On the other hand, this theory can be problematic.  If they are Time Lords, why are they all identical?  Why are they all female?  And most frighteningly, why do they have *fangs*?  A transformation brought on by this punishment?  Or, are they really just a different breed of time based species?
gpt
During The End of Time when the Time Lords vote on whether or not to destroy the rest of reality, two time lords stand opposed. They are forced to maintain the weeping angel's pose, as a form of shaming. The exact quote is "as monuments of their shame, like the Weeping Angels of old"...

The pose is a reference too, not the cause of, weeping angels.