When you are a seller offering additional incentives to the showing agent puts you ahead of other marginal properties. If there is a lot of inventory of houses that are similar (like entry level new construction but different builders in the same subdivision) the additional commission to the buyers agent shouldn't make a difference.
When the situation arises and I am the buyers agent I always make sure my buyer knows the seller is offering something extra to me and I've never had a problem.
The very best buyer's agents work on your behalf exclusively and don't pay much attention to what the commission is. Ultimately, if you feel the buyer's agent is only wanting you to buy a particular house because there's an incentive on it and not because you are absolutely in love with it, then you need a new buyer's agent.
That said I have buyers that closed on a Homesteps property about 6 weeks ago. The property was listed at 49,900 they purchased it at 47,000 and a 3% seller contribution to closing costs. Financing with a FHA 203k loan. There are 21,000.00 in repairs and energy efficient upgrades that they are doing to the property under the 203k. The neighborhood for their type of home runs in the 95k range. 68,000 in the home, upgraded to one of the nicest homes on the street in a 95,000 neighborhood. Please do not tell me when I disclose any bonus or incentive to my buyers that I have not done the work to earn it. My buyer clients are happy about their new home and the 20,000.00 plus equity that they have.