Not impossible, just not wise. I've seen people try to run user-content-driven sites with one or two people. The site will quickly see comments like "Mods are

Not impossible, just not wise. I've seen people try to run user-content-driven sites with one or two people. The site will quickly see comments like "Mods are asleep!" and the site will not last long. There are trolls that will intentionally upload illegal content, then screenshot their own uploads, then report their own uploads to get the site taken offline. And by trolls I mean the site operators and members of competing sites. If the site is expected to last then a reliable team is required around the clock.