I wouldn’t say hot tents are the norm, but they’re definitely common for 3rd season if a guy is planning to establish a base camp and hunt from there. For me it comes down to the style of hunt and how much country I need to cover.
If I’m running a true base camp in November, a hot tent is hard to beat. Being able to dry gear, warm up, sleep better, and reset mentally after bad weather is a big deal. That said, I still carry an emergency layer/shelter system when I leave camp. I don’t want my entire safety plan tied to making it back to the tent. Weather, elk movement, injury, or terrain can change the day fast.
My setup would be something like: hot tent at base, then day hunt with enough insulation, rain/snow protection, fire kit, headlamp, emergency bivy or tarp, food, water/filter, and comms to survive an unplanned night out. Not comfortable, but survivable.
If you’re trying to be highly mobile, then an ultralight trekking pole tent makes more sense. You lose the comfort and drying ability of a hot tent, but gain flexibility. That’s better if you’re still learning the unit, following elk sign, or don’t want to be anchored to one drainage.
For a first western elk hunt, I’d decide based on your plan:
Base camp/day hunt = hot tent plus emergency kit.
Mobile/backpack hunt = lightweight shelter carried with you.
Either way, don’t leave camp without enough gear to spend the night. Third season CO can turn from “nice hike” to “real problem” very quickly.