no I don't consider US border officers to be a risk in my threat model. I'm more concerned about dying from what I post, whether by a junta or kidnapping thieves. I personally wouln't care much other than perhaps suing for a refund of the flight .
If I'm denied entry because of something I said, it's not the end of the world, I would at most sue for a flight refund.
The more information the government (or anyone else with power over you) has, the higher the chance of false positives and of confusing correlation with causation. It's not like they will have a crack team of auditors review everything.
If you are arrested and conveyed to a foreign torture jail because an AI scanning your social media posts hallucinated that you are an international gang member, then it's also not the end of the world.
The more information given, the more likely there will be a false positive.
"You say you didn't visit the US but here's a picture of you in Vegas." "That's the Eiffel Tower. In Paris." "No, it's Las Vegas - I saw it last month. Entry rejected."