”2020 Macbook Pro overheating: Is there anything else I should try to do before going in that direction? Or do you think I'm better off replacing it?...”
I Agree - Return it.
Contact Apple Support:
Have Apple take the Mac back in for return(or a swapout). Being that Apple Stores are closed at the moment due to the Coronavirus Pandemic, Send-In Service is all that is available at the moment. So, here is how it would work:
Send-In Service Method:
- You: would contact Apple
- Apple: should send you a box
- You: would ship this to Apple
- Apple: would proceed with the return
Apple Support Contact Info:
How to Where to Place This:
In the meantime, while you are expecting the box, being that it is hot, place it in an open space (not in a closet or the corner of the room). If you have a laptop cooler, most certainly place it on that, powering the cooler from a device an external device, other the Laptop (i.e. use an external plug for the wall).