Pete, I don't think that's the point.
Landing flat = landing too fast (too little flare). Not too gradual an approach angle.
The sight picture is different than for a Cessna, so it is VERY easy to flare late during the transition. I'd argue that that's the most significant part of it (it's not THAT bad, but it needs to be looked at, and it seems it was).
I had the opposite problem. In a Warrior, full flap, idle power, and holding off until the stall horn blows will cause you to plop in as you run out of elevator authority. It works better if you let up on any one of those variables, even a little. It's not so bad on an Archer.