Exactly. And in the 9to5Mac article they say the 15 Plus overheated after "demanding use" like benchmarks and games. This article is also the first time I'm hearing of a regular 15/15 Plus getting uncomfortably hot.
Contrast that with the countless reports of people on social media saying their 15 Pro or 15 Pro Max phone is easily overheating. And not just after benchmarks and gaming, people are talking about their phone overheating to the extreme after doing regular stuff like using the GPS, using social media apps, charging, etc.
This year I'm in the market for a new phone. All these reports or overheating phones and disappointing battery life made me cancel my iPhone 15 Pro pre-order. I'm going with a regular iPhone 15 instead. I'll probably miss the faster USB transfer speed and 8GB or ram (the main two points why the Pro model was interesting to me – the camera on the Pro seems very nice, but honestly all the features I'll actually use frequently are already on the regular 15 model), but at least I'll have a phone that's fun to use on a regular basis and that won't burn a hole in my pocket.