Why roadside break down cover for cyclists signals seismic change is coming

What? Tires can definitely be punctured. If a tube gets destroyed you can at least swap it out but if the sealant doesn't stop the tire puncture, you're done.

Personally, I prefer using tubes with FlatOut + Tannus Armour: Even if I run out of tubes, Tannus gives some runflat capability so I can limp home or to a shop.