to me the added message reads more like "death, exit"

Too similar to https://www.gjplastics.co.uk/fire-exit-sign/ ?

I think this is a good move, this symbol has the same problem that the biohazard symbol has. Not sure if the trefoil was designed under the same rationale as the biohazard symbol, but at least in that case, I think the idea to make a new symbol that is recognizable but with no existing meaning is a bad idea. People end up putting it on t-shirts because the symbol looks interesting but never learn what it means. It ends up both losing its impact and not conveying anything inherently.

But it's hard to gauge how dangerous something is.

Radioactive sign? Is it on an old smoke detector? Sure, it technically is radioactive, the sign is there, but the danger is on "meh" levels. And the size of that is relatively similar to the capsule lost recently in australia, which indeed was a lot more dangerous.

Biohazard sign? Could be a smallpox sample... also could be an old bag of used tongue depressors. Firs one would cause (another) global catastophe, and the second one can be safely cleaned in most dishwashers on the "normal"/high heat setting.

> Could be a smallpox sample... also could be an old bag of used tongue depressors.

Yeah, no joke. I have boxes full of baggies with biohazard signs on them because I needed to do daily covid tests for work and each come with such a bag. I have so many of them that i was thinking about storing small parts and such in them.

>i was thinking about storing small parts and such in them.

I can only see that ending badly.

Not 24 tonnes of radioactively contaminated dust badly, but still.

I have the board game pandemic, and I used these bags to store the infection counters.

Now that's good UI design... wavey lines, black skull on red background, GTFO!