ahahahahaha... wow I actually laughed out loud at this post.
You HONESTLY think your agent has YOUR best interests at heart?
Good ones do. Good ones are also typically dealing with investments or high value properties. If you get 10 leads and only have time to handle 3 of them, you take the 3 with the highest commissions and easiest to manage clients.
A good agent realizes that any home you buy will eventually be sold, upscaled, downscaled, etc. If they do a good job now and keep in contact there is a very good chance they will be able to handle an additional 2 to 4 transactions on your behalf not to mention referrals (family, friends, etc.).
There is the other side as well. Buyers and sellers often get into stalemates over 1% of the purchase price (couple grand on hundreds of thousands). Seems silly for both parties to walk away when the buyer obviously wants to buy (they put in an offer) and the seller obviously wants to sell (they listed the place and let strangers wander through their home) but neither wants to give on that last 1%.
Generally the buyer, seller, and their reps walk away unhappy when a deal falls through because of that. Buyers still need to buy a place, which probably is not as good as their first choice that fell through. Sellers still need or want to unload their current place.
In the end the buyer is in charge. If your representative is not following your directions you should 1) complain to RECO or TREB, and 2) find somebody else. Incidentally, when given bad directions by the client it is pretty common for the agent to ask you to sign a written copy of the order and you acknowledging that they warned you about it.
It doesn't sound like the request was unreasonable BUT if I was representing you I would have asked you to sign a written acknowledgement that low-balling, if that is what you wanted to do, the seller can piss them off and result in them not liking you. In negotiating, you want the seller to like you and want to deal with you rather than being adversarial. If they like you, they'll give on the price more. If you piss them off, they'll become very defencive in negotiations.
If they really don't like the buyer they might refuse to deal with the buyer OR, even worse, feel screwed over and try to get back at the buyer in some way. Don't be surprised if all the lightbulbs are missing, the place is a pigsty, appliances have been swapped (serial numbers on the agreement!), plants in the garden have been taken or poisoned, or other things which still obey the letter of the agreement but aren't very friendly.