Please do not think that I am being combative as I do not mean it that way. You mention that I seem to be ignoring a large number of complaints. The question would be number of complaints vs number produced and of that number of complaints how many were due to lack of service?
The transmissions are manufactured by JATCO which is roughly 75% owned by Nissan. JATCO also produces CVTs for countless other car makers.
One would be hard pressed to believe that the main owner Nissan would build junk for their own vehicles but no one else.
You mention the car having regular services and fluid changes. That comment does not answer the question as to whether the CVT fluid was changed or not. If so, you should have records and if not available the fluid changing dealer should have them.