My wife uses my older T420 with a dual core i7 and an nvidia workstation GPU of some sort as a Sims 3/4 machine with Windows 8 and never has heat issues. I'm currently using a W530 with Red Hat 6 for work and it gets hot occasionally but never enough to feel more than mildly uncomfortable to the touch and certainly never enough to cause any short term problems. Granted, I only ever use it for running a few VMs, not for any games.
I wonder how many of these Macbook issues stem from popularity. If you look at any vendor's forums, you will find a bunch of posts about issues that a lot of people are having. They never make news, though, because how many people own an HP 5370-2wt20 laptop? A lot of people own HP laptops, but they don't have one model that makes up a large percentage of the laptop market. Macs, on the other hand, have a single (ish) model that makes up a large percentage of the laptop market. If there is an issue that affects 1% of HP 8209-c50mg buyers versus 1% of Macbook Pro buyers, only the Macbook numbers will be large enough to make news.