Most people don't want or need root access to their smartphone but will complain (no matter how much you tell them security is their responsibility when acting as root) when installing random software they found on the internet results in their banking details being stolen followed swiftly by all their money.
There are products you can buy in pretty much every category if you need a general purpose computing device, but most people are better off with a locked down device that reduces significantly the amount of harm they can inadvertently expose themselves too.
(As an aside, I use an iPhone and can perform - with varying degrees of hassle imposed by iOS' restrictions - many of my day to day "creation" activities, with the bigger annoyance coming from small screen size than the locked down nature of the device. In some cases, in fact, the tools available for mobile OSes are far better than those on the desktop/web due to the incentive created by app store ecosystems.)
There are products you can buy in pretty much every category if you need a general purpose computing device, but most people are better off with a locked down device that reduces significantly the amount of harm they can inadvertently expose themselves too.
(As an aside, I use an iPhone and can perform - with varying degrees of hassle imposed by iOS' restrictions - many of my day to day "creation" activities, with the bigger annoyance coming from small screen size than the locked down nature of the device. In some cases, in fact, the tools available for mobile OSes are far better than those on the desktop/web due to the incentive created by app store ecosystems.)