Why are you convinced that these are even common problems? Forums are a great source of info when it comes to things like "how to adjust valves" or "how do I service my forks", but they can give a really skewed picture of whether or not some issue is endemic on a bike, or a lack of individual maintenance, or something within a reasonably acceptable failure rate.
Every motorcycle forum I've been on has been the same way. There might be 30,000 members, out of which maybe 1 percent actually post anything, and out of that 1 percent, maybe 20 percent post with any regularity. 20 or 30 members may account for most of the posts being made at any given time. Even from an anecdotal evidence standpoint, that's a pretty small base of people to start drawing conclusions about anything. And every bike has some sort of flaw (both real and imagined) that gets exaggerated on forums. 10 guys on a forum tell you their CCT failed, and that gets repeated by other members, and soon it becomes a "known problem". Whether is actually is a "problem" is pretty hard to determine. I've seen this with Harleys, BMWs, KTMs, Guzzis, etc; Everybody "knows" that all Harleys leak oil, and the final drives on BMWs fail repeatedly, and all KTMs are unreliable, ad nauseam. If 10 out of 100 units have the same issue, that's bad. If ten out of 10,000 units have the same problem, that's negligible. And you aren't going to be able to form an accurate opinion either way of the prevalence of a problem by reading posts on a forum. I can read a hundred posts over on the Stromtroopers site about the terrible failure rate of the final drives on the 1200GS (usually by the same handful of posters) and then I can go on a BMW owners' forum and read that all those issues are wildly inflated, and deciding who is right is just about impossible.
I wouldn't be so concerned about whether or not Yamaha has "fixed" something like the coil stick issue, because it very well may not be a system wide problem. I'd be more concerned with whether or not there was an easy solution to prevent something like that from ever happening, which is something this forum is great for. At 50,000 miles I wasn't having that problem (does that cancel out the other anecdotal info from those that do have it?), but I still make sure I use boot grease on the stick and use waterproof grease around the top of the coil stick to prevent water from getting in.
If you're still researching this bike after five years and can't decide if it's right for you, then it probably isn't. I do recommend that, when you start shopping for your next bike, you limit your exposure to any forums that mention whatever bike you're considering. No matter what bike you decided on, I bet I could go on line and find some flaws that people would be bitching about in forums. Best to stay away from KTMs, because everyone knows they break down constantly and are maintenance nightmares.
Or maybe they don't; people on the KTM forums seem to love them.