If you nuke the entire thing, you can blame technical difficulties, dropping support for “legacy” products and whatnot.
Whereas if you only delete the offending content, it could mean:
- You knew they existed;
- You knew they were wrong;
- You tried to clean it up/hide it.
When found out, it could be used against you for consciousness of guilt and trying to conceal it. Even if it doesn’t amount to charges it could be a bad look for the company down the road; whereas you could just tank the hit right now for being a heartless CEO and it only goes to the pile of things Reddit is doing for IPO.
But let’s say there’s no crazy conspiracy behind and they’re just trying to clean house. You can never be sure how wide spread it is, or if you can indeed remove everything. Most importantly, why would you even devote extra resources to finding and reviewing for something that adds little to no face value to the main product(s)? Might as well just nuke the whole thing and be done with.