I'd admit I'm wrong if I'd never heard horns in my life. I'd be quite open to your ideas, in fact. But I have heard horns. I know what they are, what they do, how they work, and why they sound like they do. I don't like them. Plenty of other people don't either. Implementing a horn requires a variety of design compromises on ideal goals just like anything else audio. All a horn is is a transformer, pure and simple. There is no such thing as a completely 100% transparent transformer. Just like with OTL tube and DC coupled SS amps, a lot of people prefer not to have them there because of how they sound. On the other hand, a lot of people absolutely LOVE the sounds of particular transformers in their amps. Likewise, some LOVE their transducers to be coupled to the air with big transformers, with some even being big fans of certain varieties of horns.
My theory on why hybrid speakers struggle to mesh is because the horns make small dynamic drivers sound like massive, and unnatural, radiating surfaces. There are benefits and liabilities to this approach. Some think it's a great idea because of the virtues. Others find the virtues of something simulating a point-source more appealing. It's all compromise. I personally don't think horns are ideal in near to mid field listening because the entire point of a horn is to transform the impedance of the driver by controlling the dispersion. That makes for an efficient and linear speaker that's especially well suited to very accurate low power amps, typically with torpid damping. At the same time, simple dynamic drivers powered by more muscular hardware exhibiting more robust damping can come pretty close to what a horn does without the cost of focused dispersion. The polar opposite of horns is open baffle design and there's plenty of people who swear by those. So horns are dandy if you like them. I don't. My opinion might be very different if my listening room was 1000 sq/ft but it's not. I think most of us are like me dealing with something in the ballpark of 15x20. I think that space precludes a full horn set up and the best way to avoid the incoherency of a hybrid is not to use horns at all. It's just one guy's opinion. Please deal with it.