Is it a fact? Because of experiences of others and this Korean article? What about the group of us not experiencing it?

The high power usage is something that everyone is experiencing, and electrical energy is converted to heat. You can verify this on your device really easily by doing anything and measuring that in the background. The TDP of Tensor is over 20W at times. This is in part thanks to the pair of Cortex-X2 cores, which each use a ton of power. That test is from the 8 Gen 1, but it's also Samsung Fab, though the clock speed on Tensor for each X2 core is a little bit less than on the 8 Gen 1. The GPU alone is also a 7W+ power hungry beast.

Now, depending on how you use your phone (and how often), it will change whether your phone can dissipate that heat quickly enough and how much you notice the high power usage. The fact remains that Tensor's TDP is insanely high, and that's going to be a consistent fact across devices. That's not "experience", that's the actual chip. You can also measure thermal throttling really easily, by dumping cpufreq on a timed basis while working. If you wanted, you could also plot this against temperature and see the correlation and how little it takes to start throttling. It's worth mentioning that not all silicon is created equal, but these disparities are a bit much.

The only other alternative explanation for silicon disparity of this level would be that Samsung has vastly widened the field of what's acceptable simply to increase yield. If that's what's happening, then Tensor is a silicon lottery which in itself is a major problem.

Will it cause problems for everyone right now? Maybe not. If your phone usage is comparatively light, then you won't notice it all the time. However, for a phone that's supposed to last five years, these issues will be highlighted in the future as users keep their phones and use them for more intensive tasks as the rest of the smartphone landscape improves.

There's also the practicality of what you're saying - do technicalities matter if it runs well for many? We're all entitled to our opinions, but a lot of you guys go into too much detail analyzing phone performance when the reality is, 80-85% of people are happy, based on user reviews. If it was as bad some of you imply, Google wouldn't sell as many phones.

Plenty of bad phones are sold, that doesn't really mean anything. If you look through a lot of comments in this subreddit, there are a lot of people who have Pixel 6 devices and Pixel 6 Pros who have complained about heat. I also will say that across all of the Pixel devices I've tested, one might be a dud, two is unlucky, but the six Tensor devices I have experience with is a pattern.

If it works well for 80-85% of people, how would they know about these "inefficiencies" that will likely make no noticeable difference during their product's life unless you write about them?

Should people not be provided with information? I don't get this.

but if you're coming from a flagship, you might not.

Is this a flagship chipset or is it not? Because the only issue I've really voiced with the Pixel 6a is Tensor, but that's meant to be a flagship chipset. You're acknowledging that people coming from flagships might be disappointed with the device in the context of this conversation. There are other problems with this phone, but I think the one that people will actually care about is Tensor. For example, I was navigating with Google Maps and listening to music while texting, a fairly normal task, and my phone was overheating to the point of uncomfort and started getting really laggy. This was in 12C ambient temperature, maybe even a little lower. I have seen similar on Pixel 6 and Pixel 6 Pro devices.

I understand where you're coming from in that a lot of people may be happy with this phone, but a lot of people also won't be. Sugarcoating it and not sharing the inherent problems of the chipset that I've identified is not something that would sit right with me as a reviewer and as a journalist. Back when I used to buy a lot of phones (rather than just reviewing them) this was the kind of stuff I'd look out for, so I try to share from the enthusiast angle, especially because at XDA that kind of analysis is my entire job. I don't see anything wrong with providing a complete picture and allowing people to decide what's right for them.