No amount of antivirus or alternative OSs will save you from unpatched hardware vulnerabilities though. Visiting a malicious web page or downloading a temporarily hostage app from your favorite app store can be enough to allow the bad guys into your device.
Well there's not just prevention. Antivirus software can detect & remove. Also, by this logic, wouldn't that mean there's no point for desktop antiviruses? Seems incorrect to me.
As long as you have a currently supported device and keep it up to date, you shouldn’t ever need antivirus.
And yet sometimes you do need one.
In any case, I never said having one is foolproof. I merely said downloading random apps willy-nilly can increase the risk, sometimes not much at all and other times greatly. It depends entirely on your threat model.