> Can we scrape Reddit, Twitter, or Facebook in order to stand up a competing service that strips out all the ads?
Even if web scraping was definitively legal (this preliminary injunction doesn't mean that), that doesn't mean you can bypass the content creator's copyright. Non-copyrightable functional data is one thing, but copying all of Reddit, for example, would include copying https://www.reddit.com/r/WritingPrompts/ and that would definitely be violating the rights of the authors.
Even if web scraping was definitively legal (this preliminary injunction doesn't mean that), that doesn't mean you can bypass the content creator's copyright. Non-copyrightable functional data is one thing, but copying all of Reddit, for example, would include copying https://www.reddit.com/r/WritingPrompts/ and that would definitely be violating the rights of the authors.