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You Can't Look at Porn on Any Reddit Third-Party App Now
(www.vice.com)
This is a most excellent place for technology news and articles.
I just did a quick test with the DuckDuckGo browser. Didn't seem to have any issues loading a bunch of NSFW posts. You have to be signed in though, but I think it's been like that for quite a while now.
old-reddit can still do it while logged out. It's only new-reddit that requires logging in.