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I've a front TRP HyRd on my sweet fixeh which I've had for about 4 years with 0 issues, and a pair on my Decathlon groad bike which I've had for a year.
That said someone from France mentioned that they were part of a forum there which had been having nightmares with Decathlon issued HyRds so Caveat Emptor.
Personally the benefits as I see them is; self adjusting pads, and a much more reliable conversion of Lever pull force to brake pads (had previously tried Spyres, and hated them, and I think most cable discs just don't have as reliable way of translating the linear pull of a cable into the perpendicular push of the brake pads)
Genuine question having never used hybrid brakes. Are they really that low maintenance? I guess there's less hydraulic stuff to go wrong and cables are a breeze to mess about with in comparison. It's all a dark art to me.