Alex Jones Defamation Trial can't legally be happening but why is it happening?

One Year is the Standard Filing Deadline for a Texas Defamation Lawsuit. You have one year to file a defamation (libel or slander) lawsuit in Texas, according to Texas Civil Practice & Remedies Code section 16.002. And the "clock" begins to run on the date on which the defamatory statement is first made.

Sandy Hook was 2012