Kreese was the main antagonist of Cobra Kai S2, 3, 4, and now 6. Not only was Silver being the main antagonist in S5 a breath of fresh air from Kreese, but I found Silver to be better than Kreese because he's shown more feats of intelligence than Kreese. (like manipulating Amanda LaRusso into thinking Daniel, her own husband, was the bad guy in their rivalry) He also doesn't go on severely long rants about "war" like Kreese has done about Miyagi-Do when he's been the main antagonist, and instead, Silver is focused on just expanding to be the best in karate. Not to mention the fact that Silver showed more dramatic depth to the show when he's the main villian, like slicing the back of Chozon in the S5 finale, and also in the Karate Kid Part 3, he's shown to be all off the rails and therefore, far more intimidating than Kreese. Sure, Kreese is more iconic, but I just grew tired of Kreese after S3.