Well, this just means PCs are all over the place and it's hard to know what you get beforehand.

My experience is the exact opposite. When I let my laptop running windows sleep overnight, in the morning it's warm. Under Linux, it's room-temperature. I rarely run Windows on it, so there's no checking for mail or whatever in the background, I only have 2-3 games, Prime Video and Lightroom installed. It's also kept up to date, so no updates to install.

But, at least it now wakes back up. Up until a few months ago, it would randomly freeze up or die and reboot and get stuck at the Linux ZFS decryption prompt (I dual boot, and Linux is first). This is a 2020 model laptop, which didn't work under a fresh Windows install out of the box. The webcam wasn't working for a good 3 years (apparently some USB chip wasn't detected). The only issue I have under Linux is that the mic mute LED sometimes turns off even though the mic is muted. It's a standard-fare HP Enterprise, no dual GPU or anything fancy.