This reminded me issue that I had once in one of dell laptops at work. It frozen somewhere deep enough that power button was not even responsive. I remember that I had full battery, display was off and fans were spinning on lowest speed. I figured out that I needed to pull out the battery because waiting until it drains would take ages.

I had to do this secretly because company warranty/service deal would require it to send to dell/request technician

Wouldn't the quicker solution be disconnecting the battery for 2 seconds?

Not everyone has the skills or knowledge to disassemble their laptop. I haven’t had a removable easily replaceable battery since I feel 2006ish. My current one requires 8 security screws on the bottom, a bracket removed, and even I had some issues when I did a swap earlier this year.