Doctor-chemist here. You are correct. The carbon-fluorine bond is very inert to metabolism. Ingested Teflon would be almost entirely eliminated unchanged.
Takes pretty harsh conditions to break Teflon, but interestingly it can react with explosive violence, as I have witnessed, when combined with small particle sized Mg.
Takes pretty harsh conditions to break Teflon, but interestingly it can react with explosive violence, as I have witnessed, when combined with small particle sized Mg.