The benefits of smoke detectors very clearly outweighs the costs of smoke detectors in every household, by a very large margin. Further, smoke detectors are not intrusive. Unless there is a fire (or the battery is running low), most people will not even notice the presence of a smoke detector.
They run on RADIATION!
No they don't. I am not aware of any evidence to support this (including the revised claim that smoke detectors emit radiation).
Yes, they do, they contain Americium, and that's not even proper America, it's some cheap knock-off country, you can tell by the 'ium' at the end, just like 'pandemonium' is nothing like an actual panda. In the good ole days of Trump these fake Americiums would have been stopped at the border, but nowadays Biden let's them through, just like he let through Bill Gates and the Wuhan Clan (or so-called Covid), which is a fake Chinese knock-off Wu-Tang Clan.