It would be interesting to see head-to-head comparison of available (eg, on eBay) AMD stock coolers and the one, recommended here, CM 212 Evo, or the one, that was mentioned earlier, like Gammaxx 400, which is cheaper on Newegg now.
I mean, for 3600 we have several temperature data points: 62° for aio lc, 78° for spire and 84° for stealth. Seems like an abyss between them. There's obvious prism left and any other affordable ($30-40-ish) alternative, like that 212th.
Also, looking forward to the 3800x review. Expect its TL;DR will be even shorter
The bigger picture is why AMD chose efficiency instead of speed, for desktop parts (looking at 1st and 2nd gen X-models power consumption). Imagine a 3rd-gen X model actually overclocking 10% more (good evening, Intel). Idk, but probably they built Zen2 node keeping in mind all markets, incl. laptop and server ones. That's where Zen2 will shine even brighter..
PS Another open discussion for the stock 3600 and its 80-ish temps (that's with 30-ish at idle) could be undervolting. Going just 0.1V under stock could lead to decision to keep the box (stealth) cooler.