If the "Map of Reddit" project is any indicator the total NSFW subs are about one-third to one-fourth the size of the total non-NSFW subs. That's a non-trivial amount of use to gamble with, but the legal and regulatory headaches may make it necessary.
It may even be higher than that, because some of the usage of the other subreddits may be a consequence of being co-tenant neighbors to the NSFW subreddits, making it easy to move between the two kinds of content on the same site.
Which as a url, doesn't necessarily trigger corporate or school blocks unless the gateway is whack-a-mole filtering on subreddit names as well, and I suspect quite a few of those are designed not to reveal the nature of the content through the name alone.
Which as a url, doesn't necessarily trigger corporate or school blocks unless the gateway is whack-a-mole filtering on subreddit names as well, and I suspect quite a few of those are designed not to reveal the nature of the content through the name alone.