I agree that it's the player's responsibility. But I don't see how that equates to banning the counting of the pot in a friendly home game. After all, its not like the chips disappear after they are bet. Call clock if its taking too long, I guess?
Simply put, and as has been mentioned above, the dealer should never give any information to the players, verbally or otherwise. The dealer shouldn’t react to board cards, mention possible flushes or straights, or answer questions about bets, pot-size etc. The dealer is there to control the game, pitch cards, and run the action; not to assist players in making decisions.