It's honestly pretty hard to work out what you're trying to assert here. The parent commenter is trying, reasonably, to establish the distinction between "lying" and "defamation". It seems like you're saying "being sued is so expensive the distinction doesn't matter". Ok, sure? That doesn't have anything to do with what they're saying, and, in the context of the grandparent comment --- about libel laws being tightened up --- isn't responsive there either.

(A distinctive feature of modern libel law is SLAPP, which permits fee recovery for defamation suits that aren't well-founded, but that works against the I argument I think but am not sure you are trying to make.)