>> In other words up to 10% of all the crashes Firefox users see are not software bugs, they're caused by hardware defects!

> Bold claim. From my gut feeling this must be incorrect; I don't seem to get the same amount of crashes using chromium-based browsers such as thorium.

That's a misinterpretation. The finding refers to the composition of crashes, not the overall crash rate (which is not reported by the post). Brought to the extreme, there may have been 10 (reported) crashes in history of Firefox, and 1 due to faulty hardware, and the statement would still be correct.