I've personally seen far more hoses fail in the time I've been diving (6-7) compared to hoseless AI computers & their transmitters (never).
I don't have any data on the failure rate of either, but what you've observed may be explained by virtue of the fact that every diver has 2-5 hoses for a rec rig (HP, 2nd stage, octo, BC inflation, drysuit inflation) - whereas most divers have zero hoseless transmitters.
I've personally never seen a hose failure (though I've heard of a few second hand), but I have seen one hard failure of a hoseless transmitter, and seen more cases where it was less than 100% reliable. Then again, my sample size is far too small to really be useful.
I've also personally had a (non hoseless) AI computer pressure sensor fail - and it wasn't the hose that failed. Incidentally, I'll probably never buy another one as I found the utility of AI to not be worth the price premium.
Personally, as I would have a backup SPG anyway, a hoseless AI computer doesn't really save me a hose.
I know a lot of divers that use AI with and without hoses and love them, I don't happen to share their enthusiasm. It's great to have choices so everyone can be happy.
It also gives us something to argue about here.