I think there actually was a higher frequency of this problem with EV vars.
No. I stand by my point there... As far as I know, there has never been any data that pointed in the direction of EVs being anything but a much lower fire hazard than ICEs. If you had other numbers I'd gladly accept those but it seems you don't do maybe you should just consider that your impression is wrong.
Here in Denmark we have seen completely unheard of failure rates at mandatory safety checks for Tesla model 3
Failure rate for mandatory tests refers to a lot of things, most of which aren't immediate hazards and all of which don't refer to the high voltage battery fire probabilities. It's a terrible sign that tesla fails these, but this has nothing to do with batteries spontaneously igniting.
This has almost seemed like a cover up to me
Dude... It's just data that hasn't been prepared in a way you'd like it. That doesn't mean there's a conspiracy going on.
Luckily, https://lemmy.ca/comment/21667925 above already looked it up and lo and behold, you're much safer in an electric vehicle.