Horn based loudspeakers why the controversy?

Well stated phusis{I don't know why one would necessarily want big speakers to blend in visually - it kind of goes contrary to their nature. If you got the dedicated space to house something like big horns, let them unapologetically take up the environment they inhabit and functionality have its say. I for one like the purity, honesty, and looks-by-way-of-function not watered down or over aestheticized. It lets you know their true purpose}

most of the worst speakers ive heard was horns.

when horns sounds coloured, nothing else in the audio world is so unbearable to my ears

This has also been my experience.

I can tolerate a colored sounding non horn speaker much easier.

But to me, and the things I look for in audio, even when horns are done right (AvantGarde Acoustics, Cessaro, Acapella*), there are other, non horn speakers at the same price points, that to my ears, still sound better.

Early in the pandemic, my cousin bought a pair of Klipsch Heresy IV, but then was trapped in Europe unable to get a flight back to the States, He asked me to take them to my house and break them in for him. I was all excited to get to listen to them, but that did not last long.

They just came off sounding like a ’blunt instrument’ to me. The tended to give any music I played through them, a veneer like it was being played through a PA system. Maybe not a bad thing when listening to rock, but when I listen to classical, I want it to sound like the instruments are coming unamplified, in front of me.

And yes, to all the naysayers, I was listening to them through high quality tube gear.

And yes, I have also heard Klipshorns for extended periods, and while they are certainly better, they still do a lot of things wrong, to my ears.

*Although, that plasma tweeter Acapella uses is frighteningly good!

{my cousin bought a pair of Klipsch Heresy IV} that's a lot of hands-on experance you used to form such an all-encompassing opinion.