Up until recently, states couldn't even collect sales tax from online retailers shipping into their states because "businesses shouldn't have to navigate the laws of 50 states." (Paraphrased)

I think that World Wide Volkswagen is relevant here, though civil. The question is whether he availed himself of the benefits of Florida law.

To put it another way, I'm not even sure we get to a 1A question. I think this is purely a 14th Amendment due process issue. Are citizens now subject to the laws of all 50 states merely by posting on internet forums respecting matters in those states?

https://supreme.justia.com/cases/federal/us/444/286/#:~:text=Wide%20Volkswagen%20Corp.-,v,%2C%20444%20U.S.%20286%20(1980)&text=Personal%20jurisdiction%20may%20be%20appropriate,conduct%20and%20connection%20with%20it.