Its hard to say how many have issues, cause obviously people having them will be very vocal about it (and rightfully so). But others have put 200000km on them pretty much trouble free. I think they clearly have a quality control problems at Honda. Even if it's just 5-10% of bikes affected, its more than it should be at that price. Like the rusting wheels, Honda knew about it since 2016, but waited until 2018 or 2019 to use stainless spokes. Before buying mine I had the mechanics inspect the welds and paint, and before taking the keys I also inspected it, so far so good. I've seen some bikes with horrendous welds and paint jobs...I'll be curious to see if they've solved everything on the 2020...
Then you admit it yourself it's absolutely not a lemon thing, they had QC problems undoubtedly, since I've been going through the forums on different motorcycle types and brands, to know what to expect buying my next bike, I have hardly seen as many issues, within a few years maybe outside of KTMs and older Ducatis, that's the kind of reliability you can expect from Honda ???
I work for the watch industry in Switzerland not even luxury ones (From Swatch to Omega)in engineering troubleshooting and although our products can never injure or kill someone if unreliable, the maximum accepted failure rate of production, is well under 1% and at 2% they will stop production and recall all parts.
I know it's not directly comparable, but I expected more quality and seriousness from Honda, our custommers usualy with serious claims get a brand new watch without question whatever the price and I know japanese engineering can surpasse Swiss and German Products, so rather disapointing !
Funnily I did almost opposite from you, I sold my AT and got a 2019 Tiger 800, that is the most refined and solid bike I've owned, but yeah it's the 3rd revision of the model.
What's certain is I learned my lesson, never again buy a motorcycle in the first 2 years of manufacturing !
Hopefully they sorted it out for the 1100 models, or I don't think Honda's reputation will hold for very long.