Kosheen was fine for a minute. Resist was great, but I haven't really paid attention to them much after that.
If older artists are trying to make great new music, I'm thrilled. If they're just trying to churn out "EDM" anthems or put out crap to take advantage of the moment, I'm not so interested. Then again, for the guys who paid their dues and never saw much money from it, I guess more power to them for getting some coin in older age.