He's likely relying on precedents like the one below. It was in civil, but dealt with in personam jurisdiction for internet posts. Here the crux would seem to be whether the conduct was directed into Florida.

I think it's going to be difficult to argue that every post about a person in Florida is necessarily directed into Florida where the poster was in New Jersey and the site is hosted in California, especially where the subject of the post is a public official. Do my comments about DeSantis subject me to Florida Law? I don't think so.

I also question the long arm jurisdiction in a criminal context from a constitutional perspective. Land and boundaries matter. If they don't, a Texas sheriff could issue a warrant for Sheriff Chitwood's arrest for violation of Texas Civil Rights law because Sheriff Chitwood intended his conduct to chill speech in every state in the nation, including Texas.

https://law.justia.com/cases/new-jersey/supreme-court/2000/a-5-99-opn.html