IMO, both U.S. and UK libel suits should both be very strongly discouraged, since I know of dozens of cases where organizations and individuals have successfully used them to prevent highly important information from being propagated, and I think approximately no case where they did something good (instead organizations that frequently have to deal with libel suits mostly just leverage loopholes in libel law that give them approximate immunity, even when making very strong and false accusations, usually with the clarity of the arguments and the transparency of the evidence taking a large hit).
(Unavoidably political, as lawsuits often are)
A central example of the court system broadly, and libel lawsuits narrowly, promoting better epistemics are the allegations that the 2020 election was fraudulent.
It is certainly not true that there are always loopholes that give immunity, see e.g. Fox News’ very expensive settlement in Dominion v. Fox News.
(Unavoidably political, as lawsuits often are)
A central example of the court system broadly, and libel lawsuits narrowly, promoting better epistemics are the allegations that the 2020 election was fraudulent.
It is certainly not true that there are always loopholes that give immunity, see e.g. Fox News’ very expensive settlement in Dominion v. Fox News.
More broadly: “Trump, his attorneys, and his supporters falsely asserted widespread election fraud in public statements, but few such assertions were made in court.” The false allegations of fraud were dependent on things like hearsay, false claims that opponents weren’t given a chance to respond to, and vague or unsupported claims; virtually all discussion on the internet, and this post in particular, feature all three; the court system explicitly bans these. (Note that people who can’t support their case under legal standards of evidence often just settle or don’t bring a case in the first place.)