A big part of the issues can be traced all the way back to the redesign and retooling done for the 2007 (2006 Dyna) model year. That's when all the crankshaft (flywheel assy) issues became ridiculous and Harley changed it's runout specs from .003" max at the pinion shaft to .012" at the pinion shaft, to avoid having to scrap large quantities of their production. There was also a major change to the primary drive which increased shock loading on the suspect cranks, and a general cheapening of various component parts by the MoCo. There were plenty of failures on the TC96 models, so it wasn't just a CVO110 issue. The 110 though came with it's own set of additional problems from day one, such as the head gasket failures and oil leaks, defective ACR's, and compensators that couldn't cope. They also had many issues with tapered cylinders right out of the box and piston slap. Last but definitely not least the valve train was seriously flawed in a multitude of areas. The valve guides had a bad habit of dropping or seizing on the valve stem, especially on the hotter rear cylinder. The inner cam bearings failed at relatively low miles, as well as the lifter rollers. Only after six years of failures did the MoCo upgrade the inner cam bearings and come out with a beefed up roller for the lifters, and even that lifter has had many failures reported.
I'm sure I missed a few more, but that should give those who are new to the site or to the CVO110 a little history. Yes, not all 110's have suffered massive failures. However, we have many members who have had several CVO110's over the past ten years and have had more than one failure. Some have already posted in this thread. I'd say that those who have posted about never having a single issue with their 110's are either really really lucky, or don't ride much. The luck of the draw is something that bites some people with pretty much any product, but high quality and well engineered products have many fewer "luck of the draw" failures than Harley, where engineering takes a back seat to styling and cost cutting (profit enhancement). To answer the OP question, IMHO the 110 is not totally junk, but compared to a well designed and manufactured engine from anyone else I think it is highly suspect. I made a personal decision many years ago that I wouldn't buy a bike with a 2007 and later TC engine in it, and especially a CVO110. I don't tolerate miserable reliability in my other vehicle choices, and I'm not interested in making exceptions for H-D.
Jerry