Honestly, with all the stuff going on the last few years it's easy to forget the Syrian Civil War never really ended.
I was under the impression Assad had managed to consolidate power and pushed the rebels to the outskirts. If the rebels can capture Syria's 2nd biggest city.. it puts the future of the Assad regime into doubt. And by extension Russia's influence in the region.
I do not think this bodes well for the future stability of the region.
Reddit tries their best to reduce liability. In the past there have been subs that are focused on "raiding" and "brigading" or whatever you wanna call it. They hype up a bunch of easily impressionable users in a fever pitch and they go around spamming and vote rigging.
A well coordinated attack is enough to bring an active sub to its knees. This ruins the experience for the other users.
Of course the real reason, however, is because these types of subs when left unchecked tend to get too enthusiastic over time and create negative publicity for reddit - which of course puts them at risk of losing advertising revenue.
For example, /r/the_donald and their brigades and harassment https://www.wired.com/story/the-hate-fueled-rise-of-rthe-donald-and-its-epic-takedown/ which led to calls for violence and all sorts of tricky potential legal liabilities
or /r/wallstreetbets with their market manipulations https://www.cbsnews.com/news/gamestop-reddit-wallstreetbets-short-squeeze-2021-01-28/ that brought a lot of talk about government regulation
so they try to curb these types of behaviors right at the root and stem, in order to try and prevent it ultimately developing into something that could be a risk to the bottom line