Calling down TAGs - losing strategy?

[RiverTheNuts]

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Betfold is bad on the river. No way he calls you with a worse hand.

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FYP sir... he is definately not calling with a worse hand, only raising an ace or a bluff, so even when you are ahead you cant call the bluff-raise, check/call again on the river if you've come this far

No one donks this with an ace, and everyone knows this, so youve defined your hand exactly, and are only getting called by a better king, raised by an ace, or by a good player... raised with rags, knowing you are bet/folding

Betting this river loses you more than 1 BB. 99% of the time you are either called or raised with a better hand, or else you fold a worse one, and 1% of the time he bluff raises you which costs you the entire pot. Check/calling nets you all the times he bets again with rags, and gets you to showdown for 1 bet