> there are testimonies of smart home devices like anti-theft alarms or automatic doors, that stop working whenever [...] because their backends rely on Cloudflare.

The fault here lies 100% with horribly designed IoT devices that turn into bricks when they lose internet connection.

Yeah the horribly designed alarm system that can't alert a central authority that something has gone wrong. Maybe we should just put huge air raid sirens on our homes instead?