>>1762665not him but they are far more comfortable and allow for much better control, the key is they need to be fairly high and definitely not slammed, you don't want to be head down when riding fast over tricky terrain, the flare of the bar widens your reach which makes sense control wise, you wont be riding in the drop with knuckles facing forward in the way you do in normal drops, rather you alternate between riding the hoods, the top bar and the flared part of the drop.
They are a great way for cyclists more used to a road set up to enjoy mtb/trail riding without altering completely their riding position, it's more of a compromise that balances speed and control.
They are basically an evolution of the moustache and path racer style bars. Over the past few years the industry desperate as ever for any gimmick or excuse to sell something '''''new''''' went mad for them with the gravel bike meme which is actually 80s/90s mtb recycled. Two of my five bikes have flared drops, great for urban and off tarmac trekking.