I can't directly speak for the reliability of that particular Kenwood, because I've never owned or worked on one, but I currently have a total of eight* vintage Japanese made direct drive turntables between 33 and 43 years old and not a single one is unreliable or required a recap or any other electrical maintenance. Given that that particular Kenwood is a contemporary of the tables I own, and actually cost more new than any of mine, I can't imagine why it wouldn't be equally reliable. In fact, I'd love to have one.
It's the later decks with the servo arms and more advanced electronics that scare me away.
Case in point, I just finished servicing my oldest table last night, a Technics SL-1500, a fully manual direct drive model from 1975. It was the easiest deck to service I have ever owned. Being fully manual, there's very little that can go wrong. Just two drops of spindle oil every 2000 hours (about 10 years of average home use), maybe replace the heavy weight silicon oil in the cueing mechanism once every 20 - 30 years and Deoxit the speed control pots as needed if it stops holding speed. I doubt if any of this had ever been done before I got it, but could have been easily handled by any halfway competent tech. To me, it's any not more difficult than changing the oil in your own car, and like with the car, for those who don't want to do it themselves, there are professionals who will do it for them.
Point being, unless there are advanced electronics involved, most vintage Japanese made direct drive turntables will be reliable for many decades with only minimal maintenance. Do it yourself, or pay a processional to give it a good servicing once every ten years or so, and it will probably outlast most owners.
* 2 Technics, 2 MCS also made by Panasonic, 2 JVC, 1 Realistic made by CEC and 1 Sony