I've never read or heard of a dashcam's lithium ion battery causing a fire or explosion. Back when I used action cameras as dashcams, I used to have to replace swollen batteries approx every 1+ years.
Nowadays replacing such a battery in current dashcams is very easy...just plug in the new battery's molex connector...no soldering skillz required.

With that having been said, I prefer to err on the side of safety and will only use super-capacitor dashcams, and consider it to be a little bit more peace of mind in our already-complicated and busy world. But still there is a tiny rechargable battery inside supercap dashcams....the Real Time Clock (RTC) battery, which keeps alive the dashcam's settings. Its purpose is similar to the CR2032 CMOS battery on computer motherboards which keep alive the BIOS settings.

offhand I can think of more than 3 distinct models which can have the batteries swapped.

but I'm not gonna think too hard...no need to cos of supercaps