You cannot stop the claim.
But the good news is that claims of jurisdiction by many countries are routinely ignored by many other countries. So enforcement attempts might fall short.
- I've written things here that might get me into real trouble with the authorities of North Korea if I ever traveled there and if they were able to match my real-world identity with this account. But I don't plan to travel there.
- Likewise, before I went to Turkey I should probably review what I've written about their government, and then wonder if it is worth the risk. Probably yes, it wasn't very incendiary.
- But my home country and those I tend to visit (if there is no pandemic ongoing) would not extradite me for what I wrote.