RE: IS THE SMARTPHONE THE BIGGEST CYBERSECURITY RISK IN 2021?

A bit late to the party, but you know what is even worse than phones: smart devices. Smart devices are notoriously bad at security, and many smart devices (such as an oven for example) could do serious damage if compromised.
/end rant

But yeah, I definitely agree with the risks here, and luckily most 'smart' devices are not used in secure settings (as far as I'm aware).