From that very review:
"Although AMD's Wraith coolers don't get a ton of love from everyone -- and evidently you can do better by spending
as little as $20 -
$30 on an aftermarket tower style cooler -- the convenience of a decent box cooler means upgrading is not a must and ultimately many people don’t. "
You've seen our Ryzen 5 3600 vs. Core i5-9400F battle in over 30 games, you've also seen the R9 3900X and Core i9 9900K duking it out...
www.techspot.com
I can't tell you how many PC's I've repaired with a 3570K or other K class CPU at completely stock settings, no overclock.
Ultimately, stock is what's going to get used the vast majority of the time, save for a few select enthusiasts parts.
You have to remember the graph above is a worst case scenario with TechSpot likely putting the PC under full utilization for an extended period of time to saturate the sinks. Actual operating temps when using the PC will be much lower, depending on what's being done. If you are encoding then the aftermarket cooler might be worth it. Otherwise you'll likely be looking at 65 - 78c during gaming, which is perfectly acceptable.
If you look at the graph, the difference between a beefy cooler and the wraith stealth is 50 MHz. Not really worth it. The only stock cooler that is a problem on that list is Intel's current aluminum stock cooler (they no longer offer the cooper one), which is both thermal throttling and exceeding long term safe operating temperatures.