And the question was closed without any comments whatsoever. The reason cited was that it was too broad. I don't see how this is a broad question, as I was very specific: Are there physical theories such that space-time is discrete, isotropic, and uniform. How is that not specific. Furthermore, I made it very clear that I am a philosophy student so I may simply lack the ability to use the precise physics language. I have very little experience with physics, and I was under the impression that this was a place to learn and ask questions. If the question is poorly phrased, it seems there should be some effort to help me format the question better so that it is appropriate for the site rather than jumping to close the question. It was closed in no time, this seems rather juvenile.
You're asking for a list of theories, which is a question without the potential of having a "correct" answer and is usually seen as too broad around here. See e.g. Good list, bad list and its linked questions for prior meta discussion of questions asking for lists
The “single person” who closed your question is a moderator who is intentionally empowered to close questions unilaterally.
The Edit link is still there after the question is closed, but the edit history shows that you have not made use of it. May I ask why not? If you will excuse my saying so, it seems that you prefer to complain that the moderator is being “juvenile” rather than comply with their advice. Moderating is an often thankless job and moderators should not be abused simply for doing their job.
If you edit your question to meet the expectations of the site, then members can vote to reopen it. I assume that a moderator can unilaterally reopen it as well.
As far as I understand the policies of the site, it is not the moderator’s job, or anyone else’s, to help you compose an acceptable question. That is your job. The same rule applies to all members, regardless of whether they are physicists or not.